User Manual

Operator’s Manual 
14221-1400-2000 
Sep/11  
P5500 Series 
Portable Radio 

14221-1400-2000   
2 
REV 
DATE 
REASON FOR REVISION 
-  Sep/11  Initial release. 
Harris Corporation, Public Safety and Professional Communications (PSPC) Business continually evaluates its technical publications for 
completeness, technical accuracy, and organization. You can assist in this process by submitting your comments and suggestions to the 
following: 
Harris Corporation    fax your comments to: 1-434-455-6851 
PSPC Business    or 
Technical Publications    e-mail us at:  PSPC_TechPubs@harris.com 
221 Jefferson Ridge Parkway 
Lynchburg, VA 24501 
 ACKNOWLEDGEMENTS 
The software contained in this device is copyrighted by Harris Corporation Unpublished rights are reserved under the copyright laws of the 
United States. 
This device is made under license under one or more of the following US patents: 4,590,473; 4,636,791; 5,148,482; 5,185,796; 5,271,017; 
5,377,229; 4,716,407; 4,972,460; 5,502,767; 5,146,497; 5,164,986; 5,185,795; 5,226,084; 5,247,579; ; 5,491,772; 5,517,511; 5,630,011; 
5,649,050; 5,701,390; 5,715,365; 5,754,974; 5,826,222; 5,870,405; 6,161,089; and 6,199,037 B1.  DVSI claims certain rights, including 
patent rights under aforementioned U.S. patents, and under other U.S. and foreign patents and patents pending.  Any use of this software or 
technology requires a separate written license from DVSI. CREDITS! 
Harris Corporation, assuredcommunications, EDACS, VIDA,  and OpenSky are registered trademarks and ProScan and Failsoft are 
trademarks of Harris Corporation. 
RBRC and 1-800-8-BATTERY are registered trademarks of Rechargeable Battery Recycling Corporation. 
AMBE is a registered trademark and IMBE, AMBE+, and AMBE+2 are trademarks of Digital Voice Systems, Inc. 
TORX is a registered trademark of CAMCAR division of TEXTRON, Inc. 
All other product and brand names are trademarks, registered trademarks, or service marks of their respective holders. 
NOTICE! 
The material contained herein is subject to U.S. export approval. No export or re-export is permitted without written approval from the U.S. 
Government. Rated: EAR99; in accordance with U.S. Dept. of Commerce regulations 15CFR774, Export Administration Regulations. 
Information and descriptions contained herein are the property of Harris Corporation. Such information and descriptions may not be copied 
or reproduced by any means, or disseminated or distributed without the express prior written permission of Harris Corporation, PSPC 
Business, 221 Jefferson Ridge Parkway, Lynchburg, VA 24501. 
This manual covers Harris Corporation products manufactured and sold by Harris Corporation. 
This product conforms to the European Union WEEE Directive 2002/96/EC. Do not dispose of this product in a public landfill.  Take it to a 
recycling center at the end of its life. 
The voice coding technology embodied in this product is protected by intellectual property rights including patent rights, copyrights, and 
trade secrets of Digital Voice Systems, Inc. The user of this technology is explicitly prohibited from attempting to decompile, reverse 
engineer, or disassemble the Object Code, or in any other way convert the Object Code into human-readable form. 
Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier.  Changes or 
modifications not expressly approved by Harris Corporation could void the user’s authority to operate the equipment. 
This manual is published by Harris Corporation, without any warranty. Improvements and changes to this manual necessitated by 
typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by Harris 
Corporation, at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual 
may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any 
purpose, without the express written permission of Harris Corporation. 
Copyright © 2011 Harris Corporation.  All rights reserved. 

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3 
TABLE OF CONTENTS 
Page 
1. SAFETY CONVENTIONS .................................................................................................................................... 8 
2. SAFETY TRAINING INFORMATION .............................................................................................................. 9 
2.1 RF EXPOSURE GUIDELINES .................................................................................................................. 9 
2.2 ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY .............................................................. 10 
2.3 REGULATORY APPROVALS ................................................................................................................ 10 
2.3.1 Part 15 ......................................................................................................................................... 10 
2.3.2 Industry Canada .......................................................................................................................... 11 
3. OPERATING TIPS .............................................................................................................................................. 12 
3.1 EFFICIENT RADIO OPERATION .......................................................................................................... 12 
3.1.1 Antenna Care and Replacement .................................................................................................. 12 
3.1.2 Electronic Devices ...................................................................................................................... 12 
3.1.3 Aircraft ........................................................................................................................................ 13 
3.1.4 Electric Blasting Caps ................................................................................................................. 13 
3.1.5 Potentially Explosive Atmospheres ............................................................................................ 13 
4. BATTERIES ......................................................................................................................................................... 14 
4.1 CONDITIONING BATTERY PACKS ..................................................................................................... 14 
4.1.1 Conditioning NiMH Battery Packs ............................................................................................. 14 
4.1.2 Additional Information ............................................................................................................... 14 
4.2 CHARGING BATTERY PACKS ............................................................................................................. 14 
4.3 BATTERY PACK USAGE ....................................................................................................................... 15 
4.4 CHANGING THE BATTERY PACK ...................................................................................................... 15 
4.4.1 Removing the Battery Pack ......................................................................................................... 15 
4.4.2 Attaching the Battery Pack.......................................................................................................... 17 
4.5 BATTERY DISPOSAL ............................................................................................................................ 17 
5. INTRODUCTION ................................................................................................................................................ 18 
5.1 WATER RESISTANCE ............................................................................................................................ 19 
5.2 UNIVERSAL DEVICE CONNECTOR ................................................................................................... 19 
6. OPTIONS AND ACCESSORIES ....................................................................................................................... 20 
7. CHANGE OPERATING MODE ........................................................................................................................ 22 
7.1 CHANGE FROM OTP MODE ................................................................................................................. 22 
7.2 CHANGE TO OTP MODE ....................................................................................................................... 22 
8. OPENSKY OPERATION .................................................................................................................................... 23 
8.1 CONTROLS .............................................................................................................................................. 23 
8.1.1 Buttons, Knobs, and Switch ........................................................................................................ 24 
8.1.2 Keypad ........................................................................................................................................ 25 
8.1.3 Display ........................................................................................................................................ 26 
8.1.4 Radio Status Icons ....................................................................................................................... 26 
8.2 TRI-COLOR LED ..................................................................................................................................... 27 
8.3 LOG IN TO THE NETWORK .................................................................................................................. 27 
8.4 LOG OFF THE NETWORK ..................................................................................................................... 28 
8.5 PERSONALITY ........................................................................................................................................ 28 
8.5.1 Profiles ........................................................................................................................................ 28 
8.5.2 Talk Groups ................................................................................................................................ 29 
8.6 OPENSKY DISPLAY OVERVIEW ......................................................................................................... 29 
8.6.1 Display’s Top Line...................................................................................................................... 29 
8.6.2 Display’s Second Line ................................................................................................................ 29 
8.6.3 Dwell Display ............................................................................................................................. 29 
8.7
ALERT TONES ........................................................................................................................................ 30

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TABLE OF CONTENTS 
Page 
8.8 BASIC MENU STRUCTURE................................................................................................................... 31 
8.9 ERROR MESSAGES ................................................................................................................................ 33 
8.10 KEYPAD FUNCTION COMMANDS (P5570 ONLY) ............................................................................ 35 
8.11 QUICK KEYS (P5570 ONLY) ................................................................................................................. 35 
8.12 LOCK/UNLOCK THE KEYPAD ............................................................................................................. 36 
8.13 DUAL-TONE MULTI-FREQUENCY (P5570 ONLY) ............................................................................ 36 
8.14 CHANGING THE ACTIVE PROFILE ..................................................................................................... 36 
8.15 CHANGING THE SELECTED TALK GROUP ...................................................................................... 36 
8.16 ADJUSTING DISPLAY AND BUTTON BACKLIGHT BRIGHTNESS ............................................... 37 
8.17 STEALTH MODE ..................................................................................................................................... 37 
8.17.1 Enabling Stealth Mode ................................................................................................................ 37 
8.17.2 Disabling Stealth Mode ............................................................................................................... 37 
8.18 ADJUSTING SIDE TONE AUDIO LEVEL ............................................................................................ 37 
8.19 CHANGE OPERATING MODE .............................................................................................................. 38 
8.19.1 From OTP to ECP Mode ............................................................................................................. 38 
8.19.2 From ECP to OTP Mode ............................................................................................................. 38 
8.20 RECEIVING AND TRANSMITTING VOICE CALLS ........................................................................... 38 
8.20.1 Receiving a Voice Call ................................................................................................................ 38 
8.20.2 Transmitting a Voice Call ........................................................................................................... 39 
8.21 ADJUSTING AUDIO TREBLE LEVEL .................................................................................................. 39 
8.22 TALK GROUP LOCK OUT ..................................................................................................................... 39 
8.22.1 Lock Out a Talk Group ............................................................................................................... 40 
8.22.2 Unlock a Talk Group ................................................................................................................... 40 
8.23 SCANNING............................................................................................................................................... 40 
8.23.1 Selecting Scan Modes ................................................................................................................. 40 
8.23.2 Changing Active Scan Mode ....................................................................................................... 41 
8.23.3 Scanning Priority ......................................................................................................................... 41 
8.23.4 Scan Mode Quick Key (P5570 Only) .......................................................................................... 42 
8.24 MAKING SELECTIVE CALLS ............................................................................................................... 42 
8.24.1 Manually Dialing a Selective Call (P5570 Only) ........................................................................ 42 
8.24.2 Selective Call Using Speed Dial.................................................................................................. 43 
8.24.3 Accepting a Selective Call .......................................................................................................... 44 
8.24.4 Rejecting a Selective Call ............................................................................................................ 44 
8.24.5 Terminating a Selective Call ....................................................................................................... 44 
8.25 SELECTIVE ALERTS .............................................................................................................................. 44 
8.25.1 Defining Messages ...................................................................................................................... 44 
8.25.2 Sending a Message ...................................................................................................................... 45 
8.25.3 Receiving a Message ................................................................................................................... 45 
8.25.4 Deleting a Selective Alert Message ............................................................................................. 46 
8.26 MAKING INTERCONNECT CALLS (P5570 ONLY) ............................................................................ 46 
8.27 EMERGENCY COMMUNICATIONS..................................................................................................... 46 
8.27.1 Declaring an Emergency Call or Alert ........................................................................................ 47 
8.27.2 Receiving an Emergency Call ..................................................................................................... 47 
8.27.3 Dismissing an Emergency ........................................................................................................... 47 
8.27.4 Clearing an Emergency Call or Alert .......................................................................................... 48 
8.28 OPENSKY ENCRYPTION ....................................................................................................................... 48 
8.28.1 Automatic Encryption ................................................................................................................. 48 
8.28.2 Manual Encryption (P5570 Only) ............................................................................................... 49 
8.29 DYNAMIC REGROUPING ..................................................................................................................... 50 
8.30 STATUS MESSAGES .............................................................................................................................. 50 
8.30.1 Send Status Message via the Keypad (System Model Radios Only)........................................... 50 
8.30.2 Send Status Message via the Menu ............................................................................................. 50 
8.31
REQUEST TO TALK (RTT) MESSAGES .............................................................................................. 50

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TABLE OF CONTENTS 
Page 
8.31.1 Send RTT Message via the Keypad (System Model Radios Only) ............................................ 51 
8.31.2 Send RTT Message via the Menu ............................................................................................... 51 
8.32 GPS COORDINATES .............................................................................................................................. 51 
8.33 V-TAC OPERATION ............................................................................................................................... 51 
8.33.1 Extended Coverage Modes (XCOV, XCOV-TG, and XCOV-PROF) ....................................... 51 
8.33.2 Change Between Extended Coverage Modes ............................................................................. 52 
8.33.3 Radio Limitations Using Extended Coverage Modes ................................................................. 52 
8.33.4 Use XCOV Mode ........................................................................................................................ 52 
8.33.5 Use XCOV-TG Mode ................................................................................................................. 53 
8.33.6 Using XCOV-PROF Mode ......................................................................................................... 54 
8.33.7 Use Scene-of-Incident Mode ....................................................................................................... 54 
9. EDACS, CONVENTIONAL, P25 (ECP) OPERATION ................................................................................... 57 
9.1 TURNING ON THE RADIO .................................................................................................................... 57 
9.2 CONTROLS .............................................................................................................................................. 57 
9.2.1 Buttons, Knobs, and Switch ........................................................................................................ 58 
9.2.2 Keypad ........................................................................................................................................ 59 
9.3 DISPLAY .................................................................................................................................................. 61 
9.4 RADIO STATUS ICONS ......................................................................................................................... 62 
9.5 TRI-COLOR LED ..................................................................................................................................... 63 
9.6 RADIO STATUS MESSAGES ................................................................................................................ 64 
9.7 ERROR MESSAGES ................................................................................................................................ 65 
9.8 ALERT TONES ........................................................................................................................................ 65 
9.9 SYSTEM SELECTION ............................................................................................................................ 66 
9.10 GROUP/CHANNEL SELECTION ........................................................................................................... 66 
9.11 MODIFY SCAN LIST .............................................................................................................................. 67 
9.11.1 P5570 Model ............................................................................................................................... 67 
9.11.2 P5550 Model ............................................................................................................................... 67 
9.12 MENU ....................................................................................................................................................... 67 
9.12.1 Menu Item Selection Process ...................................................................................................... 68 
9.13 BACKLIGHT ON/OFF ............................................................................................................................. 70 
9.14 CONTRAST ADJUST .............................................................................................................................. 70 
9.15 DECLARING AN EMERGENCY ........................................................................................................... 71 
9.16 LOCKING/UNLOCKING KEYPAD ....................................................................................................... 71 
9.17 HIGH/LOW POWER ADJUSTMENT ..................................................................................................... 71 
9.17.1 Using the Menu Button ............................................................................................................... 71 
9.17.2 Using the Pre-Programmed Option Button ................................................................................. 71 
9.18 ENCRYPTION .......................................................................................................................................... 71 
9.18.1 Displaying the Currently Used Cryptographic Key Number ...................................................... 72 
9.18.2 Key Zero ..................................................................................................................................... 72 
9.18.3 Receiving an Encrypted Call ....................................................................................................... 72 
9.18.4 Transmitting an Encrypted Call .................................................................................................. 72 
9.19 SCAN OPERATION ................................................................................................................................. 73 
9.19.1 Turning Scan On and Off ............................................................................................................ 73 
9.19.2 Add Groups and Channels to a Scan List .................................................................................... 73 
9.19.3 Deleting Groups from a Scan List ............................................................................................... 74 
9.19.4 Nuisance Delete .......................................................................................................................... 75 
9.20 SYSTEM SCAN (EDACS AND P25 TRUNKED) .................................................................................. 75 
9.20.1 Wide Area System Scanning ....................................................................................................... 75 
9.20.2 Priority System Scan ................................................................................................................... 75 
9.20.3 ProScan ....................................................................................................................................... 76 
9.21 EMERGENCY OPERATION ................................................................................................................... 76 
9.21.1
Receiving an Emergency Call ..................................................................................................... 76

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TABLE OF CONTENTS 
Page 
9.21.2 Declaring an Emergency Call ...................................................................................................... 76 
9.22 INDIVIDUAL CALLS (EDACS AND P25 MODES) .............................................................................. 77 
9.22.1 Receiving and Responding to an Individual Call ........................................................................ 77 
9.22.2 Sending an Individual Call .......................................................................................................... 78 
9.22.3 Call Storage Lists ........................................................................................................................ 79 
9.23 TELEPHONE INTERCONNECT CALLS (EDACS AND P25 TRUNKED) .......................................... 79 
9.23.1 Receiving a Telephone Interconnect Call .................................................................................... 79 
9.23.2 Sending a Telephone Interconnect Call ....................................................................................... 79 
9.23.3 Dual-Tone Multi-Frequency: Overdial ........................................................................................ 80 
9.24 PRE-STORING INDIVIDUAL AND TELEPHONE INTERCONNECT CALLS FROM THE KEYPAD81 
9.25 STATUS/MESSAGE OPERATION (EDACS AND P25 MODES) ......................................................... 82 
9.25.1 Status Operation .......................................................................................................................... 82 
9.25.2 Message Operation ...................................................................................................................... 83 
9.26 DYNAMIC REGROUP OPERATION (EDACS) .................................................................................... 83 
9.26.1 Emergency Operation .................................................................................................................. 83 
9.27 MACRO KEY OPERATION .................................................................................................................... 83 
9.28 PORTABLE DATA (EDACS AND P25 MODES) .................................................................................. 83 
9.28.1 Displays ....................................................................................................................................... 84 
9.28.2 DATA OFF Operation................................................................................................................. 84 
9.28.3 DATA ON Operation .................................................................................................................. 84 
9.28.4 Exiting Data Calls ....................................................................................................................... 84 
9.28.5 Scan Lockout Mode .................................................................................................................... 84 
9.28.6 Data Lockout Mode ..................................................................................................................... 85 
9.29 TYPE 99 OPERATION (ANALOG CONVENTIONAL) ........................................................................ 85 
9.29.1 Type 99 with or without Channel Guard ..................................................................................... 85 
9.29.2 Resetting Type 99 after a Call ..................................................................................................... 86 
9.29.3 Type 99 Disable after PTT .......................................................................................................... 86 
10. CUSTOMER SERVICE....................................................................................................................................... 87 
10.1 CUSTOMER CARE .................................................................................................................................. 87 
10.2 TECHNICAL ASSISTANCE.................................................................................................................... 87 
11. BASIC TROUBLESHOOTING .......................................................................................................................... 88 
FIGURES 
Page 
Figure 4-1: Removing the Battery Pack   .......................................................................................................................... 16
Figure 4-2: Attaching the Battery Pack   .......................................................................................................................... 17
Figure 5-1: P5550 Scan and P5570 System Models   ....................................................................................................... 18
Figure 5-2: P5500 15-Pin Universal Device Connector   ................................................................................................. 19
Figure 8-1: Top View   ..................................................................................................................................................... 23
Figure 8-2: Side View   ..................................................................................................................................................... 23
Figure 8-3: P5550 “Scan” Model Front Panel   ................................................................................................................ 25
Figure 8-4: P5570 “System” Model Front Panel   ............................................................................................................ 25
Figure 8-5: Radio Display OpenSky Mode   ..................................................................................................................... 26
Figure 8-6: Full Cycle Battery Charge Indicator   ............................................................................................................ 27
Figure 8-7: Tri-Color LED   ............................................................................................................................................. 27
Figure 8-8: Personality Structure Example   ..................................................................................................................... 29
Figure 9-1: Top View   ..................................................................................................................................................... 57
Figure 9-2: Side View   ..................................................................................................................................................... 57
Figure 9-3: P5550 “Scan” Model Front Panel
 ................................................................................................................ 59

 14221-1400-2000 
7 
Figure 9-4: P5570 “System” Model Front Panel   ............................................................................................................ 60
Figure 9-5: Radio Display   .............................................................................................................................................. 61
Figure 9-6: Full Cycle Battery Charge Indicator   ............................................................................................................ 63
Figure 9-7: Tri-Color LED   ............................................................................................................................................. 63
Figure 9-8: Menu Display   .............................................................................................................................................. 67
Figure 9-9: Backlight Menu Item Selection Parameter   .................................................................................................. 68
Figure 9-10: Backlight Menu Display   ............................................................................................................................ 68
Figure 9-11: System Encryption Key Display   ................................................................................................................ 72
Figure 9-12: Group/Channel Encryption Key Display   ................................................................................................... 72
Figure 9-13: Calls Received Lists   .................................................................................................................................. 77
Figure 9-14: WHC Individual Call Display   .................................................................................................................... 78
Figure 9-15: Calls Received and Personality Lists   ......................................................................................................... 79
TABLES 
Page 
Table 2-1: RF Exposure Compliance Testing Distances   ................................................................................................ 10
Table 6-1: Options and Accessories   ............................................................................................................................... 20
Table 8-1: Buttons, Knobs, and Switch Functions   ......................................................................................................... 24
Table 8-2: Keypad Functions   ......................................................................................................................................... 25
Table 8-3: Status Icons Descriptions   .............................................................................................................................. 26
Table 8-4: Alert Tones   .................................................................................................................................................... 30
Table 8-5: Basic P5500 OpenSky Menu Structure   ......................................................................................................... 31
Table 8-6: Keypad Function Commands   ........................................................................................................................ 35
Table 8-7: Quick Key Sequence   ..................................................................................................................................... 35
Table 8-8: Scan Modes   ................................................................................................................................................... 41
Table 8-9: Status of Selective Call   ................................................................................................................................. 43
Table 8-10: Status of Selective Alert Messages   ............................................................................................................. 44
Table 8-11: Emergency Calls vs. Emergency Alerts   ...................................................................................................... 46
Table 8-12: Band Definitions   ......................................................................................................................................... 56
Table 9-1: Buttons, Knobs, and Switch Functions   ......................................................................................................... 58
Table 9-2: P5550 Keypad Functions   .............................................................................................................................. 59
Table 9-3: P5570 Keypad Functions   .............................................................................................................................. 60
Table 9-4: Status Icon Descriptions   ................................................................................................................................ 62
Table 9-5: Alert Tones   .................................................................................................................................................... 65
Table 9-6: Menu Item Information   ................................................................................................................................. 69
Table 9-7: Information Display   ...................................................................................................................................... 70
Table 11-1: Troubleshooting   .......................................................................................................................................... 88

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8 
1. SAFETY CONVENTIONS 
The following conventions are used throughout this manual to alert the user to general safety precautions 
that must be observed during all phases of operation, service, and repair of this product. Failure to comply 
with these precautions or with specific warning elsewhere in this manual violates safety standards of 
design, manufacture, and intended use of the product. Harris Corporation assumes no liability for the 
customer’s failure to comply with these standards. 
WARNING
The WARNING symbol calls attention to a procedure, practice, or the like, which, if 
not correctly performed or adhered to, could result in personal injury. Do not 
proceed beyond a WARNING symbol until the conditions identified are fully 
understood or met. 
CAUTION
The CAUTION symbol calls attention to an operating procedure, practice, or the like, 
which, if not performed correctly or adhered to, could result in damage to the equipment 
or severely degrade the equipment performance. 
NOTE
The NOTE symbol calls attention to supplemental information, which may improve 
system performance or clarify a process or procedure. 
The ESD symbol calls attention to procedures, practices, or the like, which could expose 
equipment to the effects of Electro-Static Discharge. Proper precautions must be taken to 
prevent ESD when handling circuit modules. 
WARNING - The electrical hazard symbol indicates there is an electrical hazard 
present. 

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9 
2. SAFETY TRAINING INFORMATION 
WARNING
The  Harris P5500 portable radio generates RF electromagnetic energy during 
transmit mode. This radio is designed for and classified as “Occupational Use 
Only,” meaning it must be used only during the course of employment by 
individuals aware of the hazards and the ways to minimize such hazards. This 
radio is NOT intended for use by the “General Population” in an uncontrolled 
environment. 
The  P5500 portable radio has been tested and complies with the FCC RF exposure limits for 
“Occupational Use Only.”  In addition, this Harris radio complies with the following Standards and 
Guidelines with regard to RF energy and electromagnetic energy levels and evaluation of such levels for 
exposure to humans: 
• FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC Guidelines for 
Human Exposure to Radio Frequency Electromagnetic Fields. 
• American National Standards Institute (C95.1 – 1992), IEEE Standard for Safety Levels with Respect 
to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. 
• American National Standards Institute (C95.3 –  1992), IEEE Recommended Practice for the 
Measurement of Potentially Hazardous Electromagnetic Fields – RF and Microwave. 
2.1 RF EXPOSURE GUIDELINES 
CAUTION
To ensure that exposure to RF electromagnetic energy is within the FCC allowable 
limits for occupational use, always adhere to the following guidelines: 
• DO NOT operate the radio without a proper antenna attached, as this may damage the radio and may 
also cause the FCC RF exposure limits to be exceeded. A proper antenna is the antenna supplied with 
this radio by Harris Corporation or an antenna specifically authorized by Harris for use with this 
radio. (Refer to Table 6-1.) 
• DO NOT transmit for more than 50% of total radio use time (“50% duty cycle”). Transmitting more 
than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. The radio 
is transmitting when the “TX” indicator appears in the display. The radio will transmit by pressing the 
“PTT” (Push-To-Talk) button. 
• ALWAYS transmit using low power when possible. In addition to conserving battery charge, low 
power can reduce RF exposure. 
• ALWAYS use Harris authorized accessories (antennas, batteries, belt clips, speaker/mics, etc). Use of 
unauthorized accessories may cause the FCC Occupational/Controlled Exposure RF compliance 
requirements to be exceeded. (Refer to Table 2-1.) 

14221-1400-2000   
10 
• As noted in Table 2-1, ALWAYS keep the device and its antenna AT LEAST 1.1 cm (0.43 inches) 
from the body and at least 2.5 cm (1.0 inch) from the face when transmitting to ensure FCC RF 
exposure compliance requirements are not exceeded. However, to provide the best sound quality to 
the recipients of your transmission, Harris Corporation recommends you hold the microphone at least 
5 cm (2 inches) from mouth, and slightly off to one side. 
Table 2-1: RF Exposure Compliance Testing Distances 
RADIO FREQUENCY 
TESTED DISTANCES 
(worst case scenario) 
Body Face 
800 MHz 1.1 cm 2.5 cm 
VHF (136 - 174 MHz) 1.1 cm 2.5 cm 
Table 2-2: Distance from Body for Different Carrying Options 
CARRYING CONFIGURATION TESTED DISTANCES 
(worst case from body) 
Belt Loop  3.0 cm 
Belt Clip 1.1 cm 
Leather Case with Belt Loop  4.0 cm 
Nylon Case with Belt Loop  4.4 cm 
Shoulder Strap with D-clip  1.2 cm 
Speaker-microphone with antenna  1.1 cm 
The information in this section provides the information needed to make the user aware of RF exposure, 
and what to do to assure that this radio operates within the FCC RF exposure limits of this radio. 
2.2 ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY 
During transmissions, this Harris radio generates RF energy that can possibly cause interference with 
other devices or systems. To avoid such interference, turn off the radio in areas where signs are posted to 
do so. DO NOT operate the transmitter in areas that are sensitive to electromagnetic radiation such as 
hospitals, aircraft, and blasting sites. 
2.3 REGULATORY APPROVALS 
2.3.1 
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
Part 15 
1. This device may not cause harmful interference, and  
2. This device must accept any interference received, including interference that may cause undesired 
operation. 

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11 
2.3.2 
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the 
following two conditions: (1) this device may not cause interference, and (2) this device must accept any 
interference, including interference that may cause undesired operation of the device. 
Industry Canada 
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de 
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de 
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le 
brouillage est susceptible d'en compromettre le fonctionnement. 

14221-1400-2000   
12 
3. OPERATING TIPS 
Antenna location and condition are important when operating a portable radio. Operating the radio in low 
lying areas or terrain, under power lines or bridges, inside of a vehicle or in a metal framed building can 
severely reduce the range of the unit. Mountains can also reduce the range of the unit.  
In areas where transmission or reception is poor, some improvement may be obtained by ensuring that the 
antenna is vertical. Moving a few yards in another direction or moving to a higher elevation may also 
improve communications. Vehicular operation can be aided with the use of an externally mounted 
antenna.  
Battery condition is another important factor in the trouble free operation of a portable radio. Always 
properly charge the batteries.  
3.1 EFFICIENT RADIO OPERATION 
For optimum audio clarity at the receiving radio(s), hold the portable radio approximately two (2) inches 
from your mouth and speak into the microphone at a normal voice level.  
Keep the antenna in a vertical position when receiving or transmitting a message.  
Do not hold the antenna when receiving a message and, especially, do not hold when transmitting a 
message.  
WARNING
Do NOT hold onto the antenna when the radio is powered on! 
3.1.1 
 Antenna Care and Replacement 
WARNING
Do not use the portable radio with a damaged or missing antenna. A minor burn 
may result if a damaged antenna comes into contact with the skin. Replace a 
damaged antenna immediately. Operating a portable radio with the antenna missing 
could cause personal injury, damage the radio, and may violate FCC regulations. 
WARNING
Use only the supplied or approved antenna. Unauthorized antennas, modifications, 
or attachments could cause damage to the radio unit and may violate FCC 
regulations. Refer to Table 6-1. 
3.1.2 
 Electronic Devices 
CAUTION
RF energy from portable radios may affect some electronic equipment. Most modern 
electronic equipment in cars, hospitals, homes, etc. is shielded from RF energy. However, 
in areas in which you are instructed to turn off two-way radio equipment, always observe 
the rules. If in doubt, turn it off! 

 14221-1400-2000 
13 
3.1.3 
 Aircraft 
WARNING
• Always turn off a portable radio before boarding any aircraft! 
• Use it on the ground only with crew permission. 
• DO NOT use while in-flight! 
3.1.4 
 Electric Blasting Caps  
WARNING
To prevent accidental detonation of electric blasting caps, DO NOT use two-way 
radios within 1000 feet of blasting operations.  Always obey the "Turn Off Two-Way 
Radios" signs posted where electric blasting caps are being used. (OSHA Standard: 
1926.900) 
3.1.5 
 Potentially Explosive Atmospheres 
WARNING
Areas with potentially explosive atmospheres are often, but not always, clearly 
marked.  These may be fuelling areas, such as gas stations, fuel or chemical transfer 
or storage facilities, and areas where the air contains chemicals or particles, such as 
grain, dust, or metal powders. 
Sparks in such areas could cause an explosion or fire resulting in bodily injury or 
even death. 
Turn OFF two-way radios when in any area with a potentially explosive atmosphere. 
It is rare, but not impossible that a radio or its accessories could generate sparks. 

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14 
4. BATTERIES 
The P5500 series portable radios use rechargeable, recyclable Nickel Metal Hydride (NiMH), Lithium-
Ion (Li-Ion), or Lithium Polymer (Li-Poly) batteries. Please follow the directions below to maximize the 
useful life of each type of battery. 
WARNING
Do not disassemble or modify Lithium battery packs.  The Lithium battery packs 
are equipped with built-in safety and protection features.  Should these features be 
disabled or tampered with in any way, the battery pack can leak electrolyte, 
overheat, emit smoke, burst, and/or, ignite. 
WARNING
If the battery is ruptured or is leaking electrolyte that results in skin or eye contact 
with the electrolyte, immediately flush the affected area with water. If the battery 
electrolyte gets in the eyes, flush with water for 15 minutes and consult a physician 
immediately. 
4.1 CONDITIONING BATTERY PACKS 
4.1.1 
Condition a new NiMH battery before putting into use. This also applies to rechargeable NiMH batteries 
that have been stored for long periods (weeks, months, or longer). Conditioning requires fully charging 
and fully discharging the battery three (3) times using the tri-chemistry charger.  The first time the battery 
is put into the charger, this unit will condition Nickel-based battery packs by automatically charging and 
discharging (cycling) the battery.  Refer to the appropriate charger manual for details. 
Conditioning NiMH Battery Packs 
CAUTION
Failure to properly condition NiMH battery packs before initial use will result in 
shortened performance by the battery. 
4.1.2 
For more information regarding the proper care of portable radio batteries or establishing a battery 
maintenance program, refer to ECR-7367 which may be ordered by calling toll free 1-800-368-3277, then 
select option 7. 
Additional Information 
4.2 CHARGING BATTERY PACKS 
Battery chargers are available from Harris with nominal charge times. Combinations include single and 
multi-position charge units.  
Harris chargers are specifically designed for charging nickel-based and Lithium  battery packs. The 
chargers are  chemistry-specific for the battery packs and automatically adjust the charging profiles 
accordingly.  Refer to the appropriate charger manual for specific operating instructions.  
Observe the following guidelines when charging a battery pack: 
• Avoid high temperature during charging.  

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15 
• Discontinue use if the charger is overheating. 
• Only charge Harris battery packs using a charger approved for use by Harris Corporation. 
• Do not leave batteries in the charger indefinitely. For best results leave the battery in the charger for 
two to six hours after the Green Ready LED comes on. Then place the battery pack into service and 
fully discharge (as indicated by the radio low battery warning) before re-charging. 
If any faults are encountered while charging the battery pack, consult the charger’s manual to determine 
the cause and possible corrective action. 
4.3 BATTERY PACK USAGE 
NiMH, Lithium-ion, and Lithium Polymer batteries vary in capacity and life cycle. NiMH, Lithium-ion, 
and Lithium Polymer batteries require basic usage guidelines be followed in order to optimize the battery 
runtime or shift life. 
The following guidelines will help optimize the battery runtime or shift life: 
• Ensure Nickel-based battery packs are fully discharged (as indicated by the radio low battery 
warning) before re-charging.  Full discharge is not required for Lithium battery packs. 
• Periodically condition Nickel-based battery packs.  The frequency should be determined based on 
usage patterns (refer to ECR-7367). If the battery is fully discharged (to radio Low Battery warning) 
during routine use, the frequency of conditioning may be reduced.  Lithium-ion and Lithium Polymer 
batteries do not suffer from memory-effect and therefore do not require conditioning. 
Do not leave any Harris rechargeable batteries in a charger for more than a few days.  
4.4 CHANGING THE BATTERY PACK 
4.4.1 
Make sure the power to the radio is turned OFF. 
Removing the Battery Pack 
CAUTION
Although the P5500 has been designed to tolerate changing the batte
ry pack without 
turning power off, Harris Corporation recommends turning the radio off before changing 
battery packs to ensure safety and best operation. 
1. Press or pull both latches on either side of the battery pack  toward the bottom of the radio 
simultaneously.  
2. Pull the battery  away from the radio. 
3. Remove the battery pack from the radio. 

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16 
Figure 4-1: Removing the Battery Pack 

 14221-1400-2000 
17 
4.4.2 
Make sure the power to the radio is turned OFF. 
Attaching the Battery Pack 
1. Align the tabs at each side on the bottom of the battery pack with the slots at the bottom of the battery 
cavity . 
2. Push the top of the battery pack  down until the latches click to attach the battery to the radio. 
3. Tug gently to verify that the latches are secure and the battery pack is properly attached to the radio. 
Figure 4-2: Attaching the Battery Pack 
4.5 BATTERY DISPOSAL 
CAUTION
In no instance should a battery be incinerated. Disposing of a battery by burning will 
cause an explosion. 
RECHARGEABLE BATTERY PACK DISPOSAL –  The product 
you have 
purchased contains a rechargeable battery. The battery is recyclable. At the end of its 
useful life, under various state and local laws, it may be illegal to dispose of this 
battery into the municipal waste stream. Check with your local solid waste officials for 
details in your area for recycling options or proper disposal.  Canadian and U.S. users 
may call Toll Free 1-800-8-BATTERY® 
for information and/or procedures for 
returning rechargeable batteries in your locality. 

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18 
5. INTRODUCTION 
The P5500 series portable radio is available in two models: the P5550 Scan model with a limited 6-button 
front-mounted keypad and the P5570 System model with a 15-button DTMF front-mounted keypad.  
Figure 5-1: P5550 Scan and P5570 System Models 
The P5500 portable radio delivers end-to-end encrypted digital voice and IP data communications. It is 
designed to support multiple operating modes including: 
• EDACS® (Enhanced Digital Access Communications System) 
• ProVoice™ Trunked Mode 
• OpenSky® Trunked Protocol 
• P25 Trunked Mode 
• P25 Digital Conventional Mode 
• Conventional Analog Mode 
The P5500 portables can include all of these modes or just one. Additional modes of operation can be 
added with software updates. 
The  P5500 supports a full range of advanced digital trunking features, including voice group calls, 
priority scanning, emergency calls, late call entry, and dynamic reconfiguration. It performs autonomous 

 14221-1400-2000 
19 
roaming for wide area applications. High quality voice coding and robust audio components assure 
speech clarity. 
In the trunked modes, the user selects a communications “operating” system (i.e., EDACS, OpenSky, 
ProVoice, or P25) and group. While communicating in a trunked mode, channel selection is transparent to 
the user and is controlled via digital communication with the system controller (e.g., a CSD in an EDACS 
system). This provides advanced programmable features and fast access to communication channels. 
In Conventional Analog mode, the user selects a channel and communicates directly on that channel. A 
channel is a transmit/receive radio frequency pair. 
The exact operation of the radio will depend on the operating mode, the radio’s programming, and the 
particular radio system. Most features described in this manual can be enabled through programming. 
Consult your System Administrator for the particular features programmed into your P5500.  Then refer 
to the corresponding section(s) within this manual for feature and operation information. 
5.1 WATER RESISTANCE 
The P5500 series portable radios operate reliably even under adverse conditions. These radios meet MIL-
STD-810F specifications for wind driven rain, humidity, and salt fog.  
5.2 UNIVERSAL DEVICE CONNECTOR 
The Universal Device Connector (UDC) provides connections for external accessories such as a headset, 
a speaker-microphone, audio test box, audio test cables, and programming cables.  The UDC is located on 
the right side of the radio, opposite the PTT Button.  The UDC facilitates programming and testing the 
radio.  The UDC pins perform different functions depending on the accessory attached to the UDC.   
Figure 5-2: P5500 15-Pin Universal Device Connector 

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20 
6. OPTIONS AND ACCESSORIES 
Table 6-1 lists the Options and Accessories tested for use with the P5500 series portable radios. Refer to 
the maintenance manual or to Harris Corporation’s Products and Services Catalog for a complete list of 
options and accessories, including those items that do not adversely affect the RF energy exposure. 
WARNING
Always use Harris authorized accessories (antennas, batteries, belt clips, 
speaker/mics, etc). Use of unauthorized accessories may 
cause the FCC 
Occupational/Controlled Exposure RF compliance requirement
s to be exceeded. 
Refer to Table 2-1. 
CAUTION
Always use the correct options and accessories (battery, antenna, speaker/mic, etc.) for the 
radio.  Intrinsically safe options must be used with intrinsically safe radios. See Table 6-1. 
Table 6-1: Options and Accessories 
DESCRIPTION  PART NUMBER 
ANTE NNAS  
Helical Coil 136-151 MHz  KRE 101 1219/1 
Helical Coil 150-162 MHz  KRE 101 1219/2 
Helical Coil 162-174 MHz  KRE 101 1219/3 
Helical Coil 150-174 MHz  KRE 101 1219/21 
Helical Coil 378-403 MHz  KRE 101 1219/9 
Helical Coil 403-430 MHz  KRE 101 1219/10 
¼ Wave Whip 378-430 MHz  KRE 101 1223/10 
Helical Stub 440-494 MHz  KRE 101 1219/12 
Helical Stub 470-512 MHz  KRE 101 1219/14 
¼ Wave Whip 440-512 MHz  KRE 101 1223/12 
¼ Wave Whip 800 MHz  KRE 101 1223/01 
High Gain, Flexible Construction, 800 MHz  KRE 101 1506/1 
¼ Wave Whip, Wide Bandwidth, 800 MHz  KRE 101 1506/2 
¼ Wave Whip, 900 MHz  KRE 101 1223/02 
B ATTE R IE S  (IMME R S ION-R ATE D) 
NiMH, immersible, non-IS 
BT-023406-003 
NiMH, immersible, <IS> 
BT-023406-004 
Li Ion, immersible, non-IS 
BT-023406-005 
NiMH, immersible, Goldpeak cells, non-IS 
BT-023406-103 
Lithium Polymer, Immersible 
BT-023436-001 
CHARGERS 
Sleeve, Desktop Charger  Sleeve, Desktop Charger 
Single Charger, Tri-Chemistry Single Charger, Tri-Chemistry 
6-bay Charger, Tri-Chemistry  6-bay Charger, Tri-Chemistry 
MISCELLANEOUS ACCESSORIES 
Speaker Mic without Antenna (cc) provision, <IS>  MC-023933-001 
Speaker Mic with Antenna (cc) provision, <IS>  MC-023933-002 
Earphone for Speaker Mic <IS>  LS103239V1 
GPS, non-IS  MC-009104-002 
Ruggedized Speaker Mic, Coil Cord  MC-011617-601 
Standard Speaker Mic, Non-Antenna  MC-011617-701 
DR OP S HIP AUDIO AC CE S S OR IE S  
Earphone Kit, Black  EA-009580-001 
Earphone Kit, Beige  EA-009580-002 

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21 
DESCRIPTION  PART NUMBER 
2-Wire Kit, Palm Mic, Black  EA-009580-003 
2-Wire Kit, Palm Mic, Beige  EA-009580-004 
3-Wire Kit, Mini-Lapel Mic, Black  EA-009580-005 
3-Wire Kit, Mini-Lapel Mic, Beige  EA-009580-006 
Explorer Headset with PTT  EA-009580-007 
Lightweight Headset Single Speaker with PTT  EA-009580-008 
Breeze Headset with PTT  EA-009580-009 
Headset, Heavy Duty, N/C Behind-the-Head, with PTT EA-009580-010 
Ranger Headset with PTT EA-009580-011 
Skull Mic with Body PTT and Earcup  EA-009580-012 
Headset, Heavy Duty, N/C Over-the-Head, with PTT  EA-009580-013 
Throat Mic with Acoustic Tube and Body PTT  EA-009580-014 
Throat Mic with Acoustic Tube, Body PTT, and Ring PTT  EA-009580-015 
Breeze Headset with PTT and Pigtail Jack  EA-009580-016 
Hurricane Headset with PTT  EA-009580-017 
Hurricane Headset with PTT and Pigtail Jack  EA-009580-018 
CARRYING CASE ACCESSORIES 
Leather Carrying Case without D-Rings Kit, consists of:  
 Leather Case without D-rings 
  Elastic Strap 
  Swivel Mount, 
used with Belt Loop 
Kit: CC-023931-003, incl: 
  CC-023931-001 
 FM-011820 
  KRY 101 1608/2 
used with: KRY 101 1609/1 
Leather Carrying Case with D-Rings Kit, consists of: 
 Leather Case with D-rings 
  Elastic Strap 
  Swivel Mount 
used with Belt Loop 
Kit: CC-023931-004, incl: 
  CC-023931-002 
 FM-011820 
  KRY 101 1608/2 
used with: KRY 101 1609/1 
Leather Carrying Case with D-rings used with 
  Elastic Strap 
  and Shoulder Strap 
CC-023931-002 
FM-011820 
CC103333V1 
Swivel Mount and Belt Loop  KRY 101 1608/2 
  KRY 101 1609/1 
Nylon Case (black) with Belt Loop  CC-023932-001 
  KRY 101 1609/1 
Nylon Case (orange) with Belt Loop  CC-023932-002 
  KRY 101 1609/1 
Standard Leather Case with Shoulder Strap Kit, consists of: 
  Standard Leather Case with D-Rings 
  Shoulder Strap with Loop for Speaker/Mic 
used with Swivel Mount 
Kit: CC-014528-004, incl: 
  CC-014528-002 
  CC-014524-001 
KRY 101 1608/2 
Standard Leather Case with Belt Loop Kit, consists of: 
  Standard Leather case without D-Rings 
  Standard Leather Belt Loop  
used with Swivel Mount  
Kit: CC-014528-003, incl: 
  CC-014528-001 
  CC-014527 
KRY 101 1608/2 
Standard Black Nylon Case with Belt Loop Kit, consists of: 
  Standard Black Nylon Case 
  Standard Leather Belt Loop 
Kit: CC-014534-002, incl: 
  CC-014534-001 
  CC-014527 
Standard Restraining Strap 
used with Shoulder Strap with Loop for Speaker/Mic  CC-014524-002  
Standard Leather Belt Loop   CC-014527 
Shoulder Strap with Loop for Speaker/Mic  CC-014524-001 
Metal Belt Clip (standard  CC23894 
Metal Belt Clip (alternate)  CC-011318  
“T” Strap Holder  KRY 101 1656/1 

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22 
7. CHANGE OPERATING MODE 
7.1 CHANGE FROM OTP MODE 
To change from OTP operating mode to EDACS/P25/Conventional (ECP): 
1. Use   or   to cycle through the menu until “App Mode” is displayed. 
2. Use   or   to choose an available mode. Press   and   or   to confirm (Y/N). 
3. Press the   button to confirm. 
Or 
With a system model radio, press 1# to transition to ECP. 
7.2 CHANGE TO OTP MODE 
1. Use   or  to scroll through available systems until OpenSky is displayed and wait. 
2. The radio transitions to OTP mode. 

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23 
8. OPENSKY OPERATION 
NOTE
OpenSky is only available in the 800 MHz model of the P5500 series portable radios. 
Once an OpenSky system has been selected from the available systems on your P5500 series portable 
radio, the characteristics described in the following sections will govern operation. 
8.1 CONTROLS 
The P5500 portable radio features two rotary control knobs, an emergency button, and a dual-position 
A/B switch, all located on the top of the radio.  Refer to Figure 8-1.  The Push-To-Talk (PTT) button and 
two option buttons are located to the left side of the radio keypad, see Figure 8-2.  The front mounted 
keypad of the P5570 “System” model has 15 buttons and the P5550 “Scan” model has six buttons.  Refer 
to Figure 8-3 and Figure 8-4.  
Figure 8-1: Top View Figure 8-2: Side View 

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24 
8.1.1 
The functions of the buttons, knob controls, and dual position A/B Switch vary depending on the mode of 
operation.  Their functions while in the OpenSky mode of operation are discussed in the following 
paragraphs.  
Buttons, Knobs, and Switch 
Table 8-1: Buttons, Knobs, and Switch Functions 
POWER 
ON-OFF 
VOLUME KNOB 
The Power On-Off/Volume Knob is rotated to apply power to the radio and adjust audio volume up and 
down.   
Rotating the control clockwise applies power to the radio. A single alert tone (if enabled through 
programming) indicates the radio is operational. 
Rotating the control clockwise increases the volume level.  Minimum volume levels may be programmed 
into the radio to prevent missed calls due to a low volume setting. While adjusting the volume, the display 
will momentarily indicate the volume level (e.g., VOL=40
).  The volume range is from a minimum 
programmed level of zero (displayed as OFF in the display) up to 40, which is the maximum level. 
VOICE GROUP 
SELECTION 
KNOB 
Used to select voice groups when operating within an OpenSky system.  This is a 16-po
sition rotary 
knob.  
A mechanical stop, which can limit the number of positions accessed, is shipped with the radio but must 
be installed.  To install the mechanical stop, remove the voice group selection knob, loosen the set screw 
on the voice group selec
tion knob metal base (using a 1.27 mm hex wrench), and remove the voice 
group selection knob metal base.  Replace the 16 channel ring with the channel stop ring located at the 
desired channel.  Re-install the voice group selection knob metal base, tighten the set screw, and re-
install the voice group selection knob.  
EMERGENCY 
BUTTON 
Press the emergency button to declare an emergency.  To clear an emergency, press and hold the 
Option 2 button  .  While holding  , 
press the emergency button.  Release both buttons when the 
“emergency cleared” tone sounds.   
PTT BUTTON The Push-To-Talk button must be pressed before voice transmission begins. 
SIDE OPTION 
BUTTON 1   Scrolls UP or DOWN thru available items within a sub-menu, such as available talk groups, pre-
programmed speed dial numbers, canned alert messages, etc.  
SIDE OPTION 
BUTTON 2   
A/B SWITCH Currently undefined in OTP mode. 

 14221-1400-2000 
25 
8.1.2 
The front mounted keypad of the P5550 “Scan” model has six buttons and P5570 “System” model has 15 
buttons.  Refer to 
Keypad 
Figure 8-5 and Figure 8-6, respectively. 
Figure 8-3: P5550 “Scan” Model Front Panel Figure 8-4: P5570 “System” Model Front Panel 
In OTP mode, numeric entry is the primary function of the keys. Each key is described in Table 8-2. 
Table 8-2: Keypad Functions 
KEY FUNCTION 
Primary function:  Acts much as an “enter” button to activate a selection.  
Secondary function: While in the “dwell display,” press repeatedly to scroll through and 
view status display (on 2nd line) for current profile, caller, received talk group, and 
channel. 
    Scrolls thru available menu items (see Table 8-5). 
(P5550 only) Currently undefined in OpenSky mode. 
(P5550 only) Toggles scan mode On/Off. 
(P5550 only) Currently undefined in OpenSky mode. 
(P5570 Only) 
The alpha-numeric keys are used to place telephone interconnect and individual (unit-
to-unit) calls, operating like a normal telephone keypad. 
Also used to enter alpha-numeric passwords for logging into the OpenSky network, if 
not pre-configured for automatic registration at power-up. 
(P5570 Only) 
 Initiates OpenSky functions (log in, log out, selective call, telephone interconnect 
call, etc.).  See page 31 for additional information.  It is also used as an escape or to 
clear an entry (something like backspace, but it clears everything,  not only the last 
digit/character). 
(P5570 Only) 
 Used in conjunction with alpha-
numeric keys for passwords and OpenSky 
functions.  See page 31 for additional information. 

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26 
8.1.3 
The P5500 display is made up of 3 lines.  Lines 1 and 2 contain twelve alpha-numeric character blocks 
each.  The 3rd line also contains twelve blocks, each used to display radio status icons. If programmed, the 
display backlighting will illuminate upon power up or when radio controls are operated.  Specific display 
characteristics will be discussed in following sub-sections. 
Display 
Figure 8-5: Radio Display OpenSky Mode 
8.1.4 
Status Icons indicate the various operating characteristics of the radio. The icons show operating modes 
and conditions and appear on the third line of the display (see 
Radio Status Icons 
Table 8-3). 
Table 8-3: Status Icons Descriptions 
STATUS ICON DESCRIPTIONS 
OPENSKY ICONS 
Steady – Received Signal Strength Indicator (RSSI).  Appears in the 1st and 2nd positions of the display. 
Steady – Radio is data registered.  Appears in the 3rd position of the display. 
Steady – Stealth mode is enabled, all tones and the display backlight are disabled, voice is still heard.  Appears in the 4th 
position of the display. 
Steady - Radio is transmitting or receiving an encrypted voice call.  Appears in the 6th position of the display. 
Animated – The radio is scanning for a VTAC.  Once the radio has attached to a VTAC, the icon will turn off.  The icon 
appears in the 7th position of the display. 
VTAC Connection Indicator – Indicates the client is connected to a VTAC.  Appears in the 8th position of the display. 
Steady – Indicates Scan mode is Normal or Fixed.  Is not displayed when Scan mode is None.  Appears in the 9th 
position of the display. 
Steady – Indicates Selective Call mode.  Appears in the 11th position of the display. 
Steady – Battery charge indicator.  Appears in the 12th position of the display. 
Flashing – Low battery indicator. 

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27 
Figure 8-6: Full Cycle Battery Charge Indicator 
The battery charge indicator illustrates  approximate  charge only, based on battery voltage.  Refer to 
Figure 8-6. 
8.2 TRI-COLOR LED 
Figure 8-7: Tri-Color LED 
The Tri-Color LED changes color to indicate radio status and is visible from both the front and top of the 
radio (see Figure 8-7).   
In OpenSky mode the following radio states are reflected by the LED and the status they represent are:  
Green:    Receiving 
Red:    Transmitting 
Orange: If the LED is flashing rapidly, the radio is receiving an emergency call.  If the 
LED is flashing every ½ second, the selected talk group is in the emergency state 
(although not transmitting).  If the selected talk group is in the emergency state, 
an asterisk will be displayed next to the talk group name. 
8.3 LOG IN TO THE NETWORK 
Login occurs either automatically (auto registration) if the radio has a valid registration or, if enabled, 
requires the user to enter a User ID and password. 
The user will be prompted to “Pls Login” with the *1 login command, a User ID, and password. 
1. Press *1 keys (Login command). 
2. Enter the full 10-digit User ID. 
3. Press the   key. 
4. Enter the password.  

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28 
• If  the radio is configured for alpha-numeric passwords and the password has consecutive 
duplicate numbers (“MES33” for example), enter #, the   key, between the consecutive 
duplicate numbers so the radio will not
• If the radio is configured for numeric-only passwords, do not press the 
 interpret the entry as a letter (“D” in this example). 
 key  between 
duplicated numbers. 
5. Press the   key twice. 
The User ID may be remembered from the previous log-in. (Refer to Section 8.4 for further details 
regarding log-off commands.) The password will be established before the radio is put into operation. 
Contact the local OpenSky network administrator for more information. 
NOTE
If necessary, contact radio system administration personnel for log-in assistance and/or 
radio-specific log-in instructions. 
8.4 LOG OFF THE NETWORK 
The *0## command de-registers the radio.  Typically, this is automatically performed when powering 
down the radio.  Using this method, the User ID is remembered by the radio, so only the password is 
needed at next log-in. If a user is logged in, it is necessary to log-off. 
8.5 PERSONALITY 
As illustrated in Figure 8-8, a personality defines the profiles and talk groups available to the user.  It is 
the structuring of a collection of profiles and privileges established by the OpenSky network administrator 
to provide the user with a comprehensive set of profiles to communicate effectively with the necessary 
talk groups or individuals. 
Personalities are stored on the network and downloaded over-the-air to the radio.  This process is called 
“provisioning.”  Provisioning occurs at radio power-up (if the personality is not already stored in the 
radio’s memory) and at user log-in.  When changes are made to the personality, the radio is automatically 
re-provisioned. Each personality can contain up to sixteen (16) profiles and each profile can contain up to 
sixteen talk groups. 
8.5.1 
As stated above, each profile can contain up to sixteen (16) talk groups.  A profile also defines the radio’s 
emergency behavior. All transmissions are made on the selected talk group (displayed on the top line of 
the dwell display).  The user can change the selected talk group to any of the other talk groups within the 
profile. 
Profiles 

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29 
TG a 
TG b 
TG c 
TG x 
TG y 
TG z 
TG d 
TG e 
TG f 
TG a 
TG d 
TG g 
TG h 
TG i 
TG = Talk Group 
Profile 1 
Profile 2 
Profile 3 
Figure 8-8: Personality Structure Example 
8.5.2 
A talk group represents a set of users that regularly need to communicate with one another.  There can be 
any number of authorized users assigned to a talk group. Talk groups are established and organized by the 
OpenSky network administrator.  An OpenSky talk group is similar to a channel within a conventional 
FM radio system. 
Talk Groups 
8.6 OPENSKY DISPLAY OVERVIEW 
The 12-character x 3-line display shows the radio status.  The first two lines of the display are text lines 
that change in response to user interaction with the menu buttons.  Status icons appear in the bottom line 
(line 3) of the display (see Table 8-3).  
8.6.1 
The display’s top line of text changes as the 
Display’s Top Line 
 and    buttons are pressed to scroll through the 
available menu options (see Table 8-5).  When the dwell display is present, the selected talk group will be 
displayed.  Other information, such as alert messages will scroll across the top line of the display. 
8.6.2 
The second line will display information such as active menu, login prompt, emergency status, and dwell 
display messages as described in the following section.  
Display’s Second Line 
8.6.3 
When not engaged in menu selection, the first two lines of the display default to the user-defined display, 
known as the “dwell display.”  The top line indicates the currently selected talk group.  The second line 
will display the currently selected profile, caller ID/alias
Dwell Display 
1, received talk group, and current channel name.  
Press the   button repeatedly to scroll through and view one of these second line options.  
1 Alias is a logical ID name such as “J_Smith.”  The name corresponds to a user ID such as 003-542-0001. 

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8.7 ALERT TONES 
The P5500 radio also provides audible Alert Tones or “beeps” to indicate the various operating conditions 
(see Table 8-4). 
Table 8-4: Alert Tones 
NAME  TONE  DESCRIPTION 
Call Queued one low tone/two high tones Call is queued for processing. 
Call Denied three short beeps 
Radio is out of coverage area or requested talk group is 
active. 
Grant (or Go-Ahead) single short beep 
Sounded when resources become available for a call 
request placed in the queue (if enabled) upon channel 
access.  
If the radio roams to another site while transmitting, then 
it will auto rekey and begin transmitting on that tower.  It 
gives a second grant 
tone to let the user know they have 
roamed. 
Call Removed single long low-pitched tone 
Notifies the user access to the channel has been lost 
(out of coverage area or pre-empted by higher-
priority 
call). 
Low Battery one low-pitched/one short 
mid-pitched Low battery 
Selective Alert 
Received four short tones  
Only played once to indicate a selective alert has been 
receive. 
Emergency Alert Tone  three long beeps  Sounds when an emergency alert is declared. 
Emergency Cleared 
Tone one long low-pitched tone Sounds when an emergency is cleared. 
Selective Call Ring 
Tone a ringing tone similar to a 
telephone 
Ringing is repeated every four (4) seconds until the call 
is accepted or rejected by the radio being called or until 
the network drops the call if 
unanswered after one (1) 
minute. 
Roam Tone two short tones, one high-
pitched and one low-pitched 
Sounds when the radio transitions from one radio base 
station site to another. 
Out of Range Tone three brief tones 
If enabled via programming, sounds at a programmable 
interval while the radio is in a state of persistent 
deactivation.  

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31 
8.8 BASIC MENU STRUCTURE 
Table 8-5 illustrates the basic P5500 OpenSky menu structure.  Menu items will vary depending upon 
system programming, radio hardware, and optional configurations.  All menus except the dwell display 
menu can be turned off by network administration personnel. 
Table 8-5: Basic P5500 OpenSky Menu Structure 
MENU NAME RADIO DISPLAYS USAGE NOTES 
 To/From Dwell 
Display   
Engineering 
Display bit-error rates 
and RSSI data Displays radio system connection data. For engineering use. 
Silent 
Emergency “SilentEmerg”  Use   or   to toggle between OFF/ON. Press   to enable. 
Operating Mode “App Mode”  Use   or   to choose an available mode (OTP, OCF, or ECP).  Press   
and 
confirm (Y/N) with   or   and  again. 
GPS Fix “GPS” GPS latitude and longitude position of currently tuned-
to base station [“GPS (Site)”] or 
V-
TAC (“GPS”) scrolls across top line of the display. “GPS (Aged)” indicates VTAC 
coordinates haven’t been updated for more that 2 minutes. 
User ID “User ID”  User’s identification/name scrolls across top line of the display (if programmed). 
IP Address “IP Address”  Radio’s Internet Protocol (IP) address scrolls across top line of the display. 
Station 
Identification 
“Station ID”  Station’s identification/name scrolls across top line of the display (if programmed). 
Stealth Mode 
(display backlight 
is disabled) 
“StealthMenu”  Use   or   to turn Stealth Mode “On” or “Off.”  
Treble Level “Treble Menu”  Use   or   to choose speaker treble level (LOW, MEDIUM, MEDHIGH, or HIGH)
. 
Press   to return to dwell display.  
Display 
Brightness “Bright Menu”  Use   or   to brighten or dim backlighting. Press   to return to dwell display.  
Side Tone Level “Side Menu”  Use   or   to choose side tone level (OFF, LOW, MED, or HIGH). Press   
to 
return to dwell display.  
See Next Page 

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32 
MENU NAME RADIO DISPLAYS USAGE NOTES 
See Previous Page 
Selected 
Channel “ChannelMenu”  Displays the current channel. Press   to return to dwell display. 
Scan Mode “ScnModeMenu”
Use   or   to scroll through available scan modes (Normal, No Scan, or Fixed)
. 
Press   to return to dwell display. 
Talk group 
Lock Out “LockOutMenu”  Use   or   to choose a talk group for locking/unlocking. Press   to toggle “<
” on 
(locked out) and off. 
Priority 2 
Talk group “Priority2”  Use   or   to choose Priority 2 talk group.  Press   to return to dwell display. 
Priority 1 
Talk group “Priority1”  Use   or   to choose Priority 1 talk group.  Press   to return to dwell display. 
Alerts Received “Alerts Rcvd” 
or oldest message “No alerts” or alert message text scrolls in display. Use   or   to scroll through 
all 
messages. 
Alert Destination “Alert Dest”  Use   or   to choose a speed-dial number. Press  
to go to the “Alert Msg” menu. 
Use   or   to scroll through “canned messages.” Press   
to send message and 
return to dwell display. 
Speed Dial “Speed Dial”  Use   or   to choose a speed-dial number and press PTT to place call. 
Profile Selection “ProfileMenu”  Use   or   to choose an available profile. Press   to return to dwell display. 
Talk group 
Selection “TalkGrpMenu”  Use   or   to choose a talk group in current profile. Press   
to return to dwell 
display. 
Status LED “Status LED”  Use   or   to 
toggle status led “On” or “Off.” When On, the LED flashes red when 
the radio transmits, green when receiving, and amber when in emergency. When Off, 
the LED will not light at all. 
Status Message 
“Status Msg” 
Use   or   to scroll through available messages. 
Request to Talk 
Message  “RTT Msg”  Use   or   to scroll through available messages. 
VTAC Client 
Mode “Client Mode”  Use   or   to choose Client Mode (Network, XCOV, XCOV-TG, or SOI).  
Emergency 
Dismiss “EmgDismiss”  Use   or   to choose emergency talk group. Press   
to toggle “<” on (dismiss) 
and off. 
Use   and to scroll through menus. 

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33 
8.9 ERROR MESSAGES 
This section lists and describes the error messages that may be displayed by the radio during OpenSky 
operation. 
MESSAGE 
NOAUT01 
DESCRIPTION 
Unspecified MDIS error. If condition persists in strong signal conditions, contact 
your system administrator. 
MDENIED  Unspecified MDIS error. If condition persists in strong signal conditions, contact 
your system administrator. 
UNAUTH3 
Unauthorized IP. The radio network ID has not been added to network. 
UNAUTH4 Bad authentication. If condition persists in strong signal conditions, contact your 
system administrator. 
UNAUTH5 Unsupported authentication. If condition persists in strong signal conditions, contact 
your system administrator. 
MDISBSY The MDIS is busy. If condition persists in strong signal conditions, contact your 
system administrator. 
DUP IP 
Duplicate IP. 
BADIKEY 
Invalid infrastructure public key sequence number (IPKSN). 
BADEKEY 
Invalid end-system public key sequence number (EPKSN). 
UNK MES Unknown mobile end system (MES). If condition persists in strong signal conditions, 
contact your system administrator. 
NOAUT05 MDIS failed mutual authentication. If condition persists in strong signal conditions, 
contact your system administrator. 
BADMDIS  MDIS failed mutual authentication. If condition persists in strong signal conditions, 
contact your system administrator. 
MDS BSY 
MDIS busy – retry.  
UNK DOM Unknown home domain. If condition persists in strong signal conditions, contact 
your system administrator. 
KEYSYNC 
Mismatched key sequence number. 
UNK ALG 
Unknown/unsupported encryption algorithm. 
BADSIZE 
Unsupported MDIS key size. 
NOAUT11 MES failed data mutual authentication. 
If condition persists in strong signal 
conditions, contact your system administrator. 
NOAUT12 No response from MDIS. If condition persists in strong signal conditions, contact 
your system administrator. 
NOREPLY   No SME response from MDIS. 
If condition persists in strong signal conditions, 
contact your system administrator. 
VDENIED  Unspecified VNIC error. If condition persists in strong signal conditions, contact 
your system administrator. 

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34 
MESSAGE 
BAD VID 
DESCRIPTION 
Invalid voice user ID. Check User ID. If correct, contact your system administrator. 
HOM DWN The Home VNIC is down. 
Retry. If error continues, contact your system 
administrator. 
SRV BSY 
The serving VNIC is busy (congested). 
MAX USR The maximum number of users are already registered with the specified user ID. 
OpenSky allows one User ID to log onto the network using up to three different 
radios. Use *0## command or power down one of the other radios to de-register the 
radio.  
NAS BSY 
The system cannot provision MES because of an administrative process. 
NOAUTHM The MES failed voice mutual authentication. If a valid radio displays this error, 
contact TAC (see Section 10.2). 
NOSUPRT The MES cannot support the required provision. If condition persists in strong signal 
conditions, contact your system administrator. 
NOAUTHV VNIC does not support or failed mutual authentication. If condition persists in strong 
signal conditions, contact your system administrator. 
PLS LOGIN 
Login with keypad. 
BAD PWD 
An invalid password has been entered. Verify the password and re-enter.  
OVER_TEMP The radio may be too hot. The 
radio will cease transmitting if it exceeds an 
operational temperature threshold. Let the radio cool before attempting to transmit. 
Report this failure to authorized technician. 
No App 
ECP mode is unavailable (not programmed). 
NO PRIV 
Missing required privilege. 
NO SYNC No forward-channel sync (weak or no coverage). If condition persists in strong signal 
conditions, contact your system administrator. 
Dead battery 
Radio must shutdown because battery charge is critically low. 
NO REG 
Not registered with MDIS, VNIC, or both. 
DISABLED 
Function disabled (e.g., function invalid in current context). 

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35 
8.10 KEYPAD FUNCTION COMMANDS (P5570 ONLY) 
To perform a command from the keypad, use the keypad commands in Table 8-6. 
Table 8-6: Keypad Function Commands 
COMMANDS FUNCTION 
*0 
Log-off command:
 *0## (logs the user off the system). See Section 8.4 for additional information.  
*1 Log-in command: *1<User ID> # <Password> ## (required for encryption). See Section 8.1.3 for 
additional information.  
*2 
Status Message: *2 <0...9> #. 
*4 
Enter Scene of Incident Mode (SOI) on specified channel and band: *4<LC>#<Band># where 
LC is the channel number that is being used as a SOI repeater and band is the number assigned 
to each frequency band.  For example, if LC 25 800 MHz (band 0) is being used for SOI, then 
enter *4,25,#,0,#.  
Exit SOI Mode with *40# 
*5 
RTT Message: *5 <0...9> #.  
*7 Initiate Selective Alert command: *7<Target ID>#[Choose Message]#.  See Section 8.25 for 
additional information.   
*8 
Radio-to-Radio Call command: *8<Selective call number>#(PTT to dial).   
*9 Public Switched Telephone Network (PSTN) Call command: *9 <telephone number>#(PTT to 
dial)  See Section 8.26 for additional information.   
*32 Begin Manual Encryption command: *32<Pre-determined Encryption Key># 
1-16 digit encryption key for 128 bit encryption; 17-32 digit encryption key for 256 bit encryption.  
*33 
End Manual Encryption command: *33# 
*61 
Initiate XCOV Mode: Extended coverage for individual users.   
*62 
Initiate XCOV-TG Mode: Extended coverage for talk groups.   
*63 
Initiate XCOV-PROF Mode command:
 *63#.  
*60 
Exit XCOV or XCOV-TG Mode: Returns to the normal mode.   
8.11 QUICK KEYS (P5570 ONLY) 
Quick Keys are a two-button sequence that provides the user with quick access to certain menu items.  
Quick Keys function as a toggle for these menu items. 
Table 8-7: Quick Key Sequence 
QUICK 
KEYS 
FUNCTION 
1# 
Transition to ECP Mode 
If ECP code is not loaded in the radio, “No App” appears in the display. 
2# 
Toggles Stealth Mode On/Off 
3# 
Toggles Scan Mode On/Off (Normal/Fixed, see details below) 
• If the Scan Mode is Normal when the Scan Mode is toggled Off, the Scan Mode will be Normal when 
toggled On again. 
• If the Scan Mode is Fixed when the Scan Mode is toggled Off, the Scan Mode will be Fixed when 
scan mode is toggled On again. 
• If the Scan Mode is Off when the radio boots up, the Scan Mode will be Normal when Scan Mode is 
toggled On. 

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36 
QUICK 
KEYS 
FUNCTION 
4# 
Lights/Tones On/Off 
Pressing 4# turns the TX/RX LEDs, Backlight, and Side Tones On/Off. 
If any of the TX/RX LEDs, Backlight, and/or Side Tones are On, and this quick key sequence is used, 
then all of the TX/RX LEDs, Backlight, and Side Tones are turned Off. 
If the radio is in Stealth mode, this quick key is disabled since the user is not able to turn on the 
light/tones in stealth mode. 
6# 
XCOV and XCOV-TG Attach/Detach 
This quick key sequence is used to manually connect to a V-TAC.  When attaching to a V-TAC, the 
radio’s programming determines whether to attach to the V-TAC in XCOV or XCOV-TG mode. 
• If the user attaches to a V-TAC manually, using the *61# or *62# command sequence, the radio is 
understood to be attached and this quick key sequence will detach the radio from the VTAC. 
• If the user detaches manually from a V-TAC using the *60# command sequence, the radio is 
understood to be detached and this quick key sequence will attach the radio to a VTAC. 
• At bootup, the radio is understood to be detached from a VTAC.  If a radio automatically attaches to 
a VTAC, the radio is still understood to be detached from a VTAC and will attempt to attach to a 
VTAC. 
• If a radio manually attaches to a VTAC and then is automatically detached from a VTAC, the radio is 
still understood to be attached to a VTAC and will attempt to detach from a VTAC. 
8.12 LOCK/UNLOCK THE KEYPAD 
1. Press and hold the   button. 
2. While holding the   button, press the   button on the side of the radio. 
8.13 DUAL-TONE MULTI-FREQUENCY (P5570 ONLY) 
Dual-Tone Multi-Frequency (DTMF) is the system used by touch-tone telephones.  DTMF assigns a 
specific tone frequency to each key so a microprocessor can easily identify its activation.  This allows for 
specific tasks such as entering a user ID and password, or selective calling. 
When a key on the DTMF keypad is pressed, the DTMF tone is played through the radio’s speaker. 
8.14 CHANGING THE ACTIVE PROFILE 
The radio can store up to sixteen (16) standard profiles, one of which is the currently active profile.  To 
change the currently active profile: 
1. Press the   or  buttons until “ProfileMenu” is displayed. 
2. Use   or    to scroll through the list of available profiles. 
3. Profile becomes active when selected for longer than 2 seconds, when the   is pressed, or when the 
menu is changed using the   or  button. Press   to activate the selected profile. 
8.15 CHANGING THE SELECTED TALK GROUP 
Each profile stored in the radio can have up to sixteen (16) talk groups.  One talk group within the 
currently active profile is set as the “selected talk group.”  To change the selected talk group, turn the 
Group Selection knob on top of the radio. 

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37 
8.16 ADJUSTING DISPLAY AND BUTTON BACKLIGHT BRIGHTNESS 
1. Press the   or  buttons until Bright Menu is displayed. 
2. Use   or   to brighten or dim the display and button backlighting. 
8.17 STEALTH MODE  
For some users, it is important to be able to turn off the radio’s display lights and side tones, but not the 
radio traffic.  For example, in covert operations, lights and sounds could inadvertently expose an 
otherwise unobservable radio user.  For this purpose, the radio has a Stealth feature that disables the radio 
display lights, indicator lights, and audible alert and side tones.  
When Stealth Mode is on, the radio continues to scan the programmed list of talk groups and the user can 
key-up on the selected talk group. 
8.17.1 Enabling Stealth Mode 
P5570 only: Quick Key combination 2# toggles Stealth Mode on and off. 
Both models:  Press the   or   buttons to scroll through menus until “StealthMenu” appears in the 
display.  To immediately activate Stealth Mode press the   or   button once.  This activates Stealth 
Mode, exits the Stealth Menu, and returns to the Dwell Display. 
The display lights, indicator lights, and side tones are disabled.  The stealth mode icon is displayed. 
8.17.2 Disabling Stealth Mode 
P5570 only:
 To re-enable all lighting, side tones and exit Stealth Mode, press Quick Key combination 2# 
again.  The radio returns to the Dwell Display. 
NOTE
Stealth Mode can also be disabled by using the Stealth Menu. 
P5550 only:
The display lights, indicator lights, and side tones are re-enabled.  The stealth mode icon disappears. 
 To re-enable all lighting, side tones and exit Stealth Mode, press any key other than PTT or 
Emergency.  The radio returns to the Dwell Display. 
8.18 ADJUSTING SIDE TONE AUDIO LEVEL 
The radio sounds confirming tones called “side tones” when its buttons are pressed. Most users find this 
audible confirmation helpful when navigating the menus. Side tone audio level can be adjusted or turned 
completely off using the “Side Menu” or the Quick Key combination #4. 
NOTE
Quick Key combination #4 turns off the backlight in addition to the side tones.  Unlike 
Stealth Mode, alert tones can still be heard. 
For covert operations, it may be necessary to turn off side tones.  For safety’s sake, turning off the radio 
during covert operations is not recommended. 

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38 
If the radio is operating properly but side tones are not heard when the menu buttons are pressed, the side 
tones are probably turned off.  To turn them back on, access the “Side Tone” menu and select a setting 
other than “off.” 
Use the following procedure set side tone level: 
1. Press the   or  buttons to cycle through the menu until “Side Menu” is displayed. 
2. Press   or   to change to the desired level (Off, Low, Medium, and High).  To turn side tones off 
completely, use the “Off” setting. 
8.19 CHANGE OPERATING MODE 
8.19.1 From OTP to ECP Mode 
Press 1#. If ECP is not loaded in the radio, the radio displays “No App.” 
Method 1 (Quick Key, P5570 only): 
1. Press the 
Method 2: 
 or  buttons to cycle through the menu until “App Mode” is displayed. 
2. Press   or   to select the desired operation mode. 
3. Press   and use   or   to select Y or N.   
4. Press   to make selection and return to the dwell display. 
5. “Restart Please Wait” appears in the display as the radio switches modes. 
8.19.2 
Press the 
From ECP to OTP Mode 
 or  buttons  to cycle through available systems until “OPEN SKY” appears in the 
display.  Pause briefly and the radio will switch automatically from ECP to OTP operation. 
8.20 RECEIVING AND TRANSMITTING VOICE CALLS 
As soon as the radio completes the initialization sequence and registers on the OpenSky network, the user 
will begin to hear calls from the talk groups in the active profile, if available.  
8.20.1 
No action is required to receive a voice call. The display responds to incoming voice calls as follows: 
Receiving a Voice Call 
• When the dwell display is set to received talk group and the scan mode is Normal or Fixed: 
a. If the received talk group matches the selected talk group, then the alias (if available) or user ID 
of the incoming caller is displayed.  
b. If the received talk group does not match the selected talk group, then the received talk group 
name is displayed. 
• When the dwell display is set to received talk group and the Scan Mode is None, the radio only 
receives voice on its selected talk group. When the call is received, the alias (if available) or the user 
ID of the incoming caller is displayed. 
• When the dwell display is not set to received talk group, then there is no display indication of an 
incoming call. 

 14221-1400-2000 
39 
NOTE
A radio receiving a System All Call, Regency All Call, or an Agency All Call displays 
“All Call” instead of the alias. A radio not transmitting on a talk group in emergency 
status will drop all other calls to scan into an All Call. 
8.20.2 
1. Select the desired talk group.  
Transmitting a Voice Call 
2. Depress and hold the PTT button, wait a couple of seconds.  If programmed by the administrator, a 
grant tone will be sounded. 
3. Begin speaking into the microphone in a normal voice.  
4. For maximum clarity, hold the radio approximately 2 inches from your mouth.  Take care not to cover 
up the microphone while speaking. 
5. Release the PTT button to terminate an outgoing voice call. 
8.21 ADJUSTING AUDIO TREBLE LEVEL 
The tone of received signals can be adjusted using the radio’s “Treble Menu.” 
1. Press the   or  buttons to cycle through the menu until “Treble Menu” is displayed. 
2. Press   or   to increase or decrease level.  There are four levels available: low, medium, medium-
high, and high. 
3. Press   or wait a few seconds to return to the dwell display. 
8.22 TALK GROUP LOCK OUT 
There are two ways to focus voice communications by suppressing calls from talk groups in the active 
profile.  
• No Scan. By changing the Scanning Mode to “No Scan” only the selected talk group is scanned. 
• Lock Out. By locking out selected talk groups, background noise or chatter can be eliminated and 
scanning resources can be focused on just those groups whose calls you wish to monitor.  
NOTE
Lock out is a listening (receive) function and only blocks received calls on locked out talk 
groups.  Lock out does not affect transmit capability.  “No Scan” and “Lock Out” do not 
apply to recent emergency lock outs. 
Only talk groups in the active profile can be locked out, since they are the only talk groups whose voice 
calls can be heard on the radio. Talk group lock out is a scan-related feature.  With lock out, one or more 
talk groups in the active profile can be temporarily disabled from being scanned.  Calls are not received 
on locked-out talk groups.  Lock out settings are not retained between profile changes or when the radio is 
power cycled. 
NOTE
P1 and P2 groups CANNOT be locked out.   
The default emergency and emergency-capable talk groups can be locked out if they are NOT in an 
emergency state.  If a talk group is locked out and is subsequently changed to the currently selected talk 

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40 
group, it will automatically be unlocked by the radio so the user can hear calls on the talk group.  The 
radio may be configured so all talk groups are automatically locked out by default.  In this case, they must 
be manually unlocked, if desired. 
8.22.1 
1. Use the 
Lock Out a Talk Group 
 or  buttons to scroll through the menu choices until “LockOutMenu” appears in the 
display. 
2. Use the   or   keys to scroll through the list of talk groups, if any, until the user group you want to 
lock out appears in the display.  
3. Press the   key to select the lockable talk group. 
4. “<” appears next to the locked out talk group. 
8.22.2 
1. Use the 
Unlock a Talk Group 
 or  buttons to scroll through the menu choices until “LockOutMenu” appears in the 
display. 
2. Use the   or   keys to scroll through the list of talk groups, if any, until the user group you want to 
unlock appears in the display. 
3. Use the   key to unlock the displayed talk group. 
NOTE
• Changing the active profile removes any lockouts you have made. 
• Turning off the radio removes any lockouts you have made. 
8.23 SCANNING 
8.23.1 
Three scanning modes are available for the radio, but only one can be active at any time.  Changing the 
scanning mode changes the way the radio scans voice calls for all of the profiles in the radio personality, 
no matter which profile is or becomes active. 
Selecting Scan Modes 
The choice of scanning mode broadens or narrows the span of communications with all the groups in 
profiles you listen to, but does not affect your interaction with those groups you talk with. The scanning 
modes available for selection may be limited to a subset of the three scanning modes by the administrator. 

 14221-1400-2000 
41 
Table 8-8: Scan Modes 
SCAN 
MODE EXPLANATION 
No Scan 
Eliminates distractions.  
Full communications (listen and talk) with the active talk group. 
No calls received from other talk groups. 
Normal 
(Default) 
The user can scan all talk groups in the active profile that are not locked out as long as there is demand on 
the site. 
Priority (P1 and P2) groups are user selectable. 
Receive calls from more than one talk group, if available from the current site. 
Allows dragging of the selected talk group, P1, P2, and default emergency talk groups to the site on which the 
radio is registered. (If other calls are available at the site, they also can be heard but they will not be actively 
dragged.) 
The default emergency talk group, as well as any emergency-enabled talk groups, is only dragged if it is in 
emergency mode. 
Fixed  Functions the same as Normal Scan Mode, except the priority groups are fixed to the selected profile’s pre-
defined P1 and P2 groups (configured via the UAS).  
The scanning mode choice remains in effect until it is changed.  Even if the radio is turned off, the current 
scanning mode selection is saved for the next use. 
8.23.2 
8.23.2.1 Setting the Scan Mode 
Changing Active Scan Mode 
1. Press the   or  buttons until “ScnModeMenu” appears in the display. 
2. Use the   or   keys to scroll through the list of modes until your choice appears: Normal, None, or 
Fixed. 
3. Press the   key to activate the scan mode selection and return to the dwell display. 
8.23.2.2 Duration of Scanning Mode Selections 
Scanning Mode selections survive power down. At startup, the radio defaults to the scanning mode of set 
during last use.  The last selection made remains in effect until a new selection is made from the Scan 
Mode menu. 
8.23.3 
The following lists the scanning priority order (from highest to lowest): 
Scanning Priority 
• Selected talk group in emergency state. 
• Default emergency group in emergency state. 
• Selected talk group. 
• Emergency capable group in emergency state. 
• Priority 1 talk group. 
• Priority 2 talk group. 
• Other (non-priority). 

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42 
8.23.3.1 Changing Scan Priority 
1. Press the   or  keys until “Priority1” or “Priority2” appears in the display (Priority1 group has 
higher priority than the Priorty2 group). 
2. Press the   or   button until the desired talk group is displayed. 
3. Press the   key to select and activate the selection.  The radio automatically returns to the Dwell 
Display. 
NOTE
• Changing the priority of a listen group does not change your talk group. 
• Priority can be set for two talk groups (Priority1 and Priority2), but only in the selected 
profile. 
• The scanning priority settings are reset to the default values when the radio is turned 
off. 
8.23.4 
Pres 3# to toggle Scan mode on and off.  
Scan Mode Quick Key (P5570 Only) 
If the Scan mode icon (see Table  8-3) is On; either the Normal or Fixed Scan modes are enabled, 
depending on programming.  If the Scan mode icon is not displayed, Scan mode is set to No Scan. 
8.24 MAKING SELECTIVE CALLS  
Selective calling is the capability for two voice radio units to obtain and use an independent talk path for a 
unit-to-unit call. A properly equipped radio can initiate a selective call to any radio in the system that is 
also programmed for selective calls. 
In the OpenSky system, a radio can be configured to initiate selective calls through a pre-programmed list 
in memory called a speed dial list.  Alternatively, a properly equipped radio can initiate a selective call to 
any radio in the system by entering the ten-digit User ID (similar to a telephone number) of the target 
radio.  Some radios are configured to only receive (not initiate) selective calls. 
NOTE
Selective calls are terminated if an emergency is declared.  The network limits selective 
calls to ten (10) minutes maximum. 
NOTE
If a Selective Call is attempted without registration, “No Priv” is displayed. 
8.24.1 
1. Enter *8, the User ID number of the user being called, and the # key (no dashes or spaces).  Note that 
this feature must be enabled by the administrator.   
Manually Dialing a Selective Call (P5570 Only) 
*8<destination user id># 
A shortened User ID number can be dialed using the following guidelines: 
• If the radio being called is in the same region and agency – enter only the last four digits. 
• If the radio being called is in the same region, but a different agency – enter the last seven digits. 

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43 
• If the radio being called is in another region or if the area is unknown – enter all ten digits. 
2. Press the PTT (and release) to ring the other user. 
The ring tone is sounded. 
If the other user accepts the call, the called user’s alias will appear in initiating caller’s display.  The 
two are now in a unit-to-unit call until one ends the call, the call is terminated due to an initiated 
emergency, or the maximum time limit of ten (10) minutes is reached. 
If the called radio is busy “BUSY” will appear in the second line of the display. 
Table 8-8 lists and defines the messages that are displayed by the radio during a selective call. 
Table 8-9: Status of Selective Call 
STATUS 
MESSAGE  DEFINITION 
Busy Peer is involved in another selective/PSTN call. 
Disconnect Selective/PSTN call was terminated for unknown reason. 
Network Err Selective/PSTN call cannot continue because of an unspecified network error. 
Reject Peer or this user declined request to establish selective/PSTN call. 
Unavailable Peer cannot be reached for selective/PSTN call. 
Calling Calling peer (i.e., for selective or PSTN calls). 
Connecting Establishing selective/PSTN call with peer. 
Hangup Peer or this user terminated selective/PSTN call. 
Lim 10 min Selective/PSTN call limited to 10 minutes. 
Timing Out Selective/PSTN call has 10 seconds remaining before limit is reached (shown for 5 seconds). 
Sel Call Selective call is active. 
8.24.2 
 Selective Call Using Speed Dial 
NOTE
Speed dial numbers are defined and provisioned by the OpenSky network administrator and 
cannot be manually entered into the radio by the user.  Contact the administrator if changes 
to the speed dial list are required. 
• Scroll through the Menu options using the   or  button until “Speed Dial” appears in the second 
line of the display. Using the   or   keys, scroll through the pre-programmed speed-dial numbers 
until the desired number appears in the display and press the PTT button.  
OR 
• Press and hold a key associated with a given number for more than three seconds.  For example, press 
and hold the   to open the Speed Dial Menu and display the number assigned to that key in the 
speed dial list.  Press the PTT button. 
A ring tone is sounded. 
If the other user accepts the call, the called user’s alias will appear in initiating caller’s display.  The two 
are now in a unit-to-unit call until one ends the call, or the call is terminated due to an initiated 
emergency. 
If the called radio is involved in another selective call, “BUSY” will appear on the second line of the 
display.  “Unavailable” is displayed when the call has not been answered after a 1 minute timeout or 
when the other party is not registered on the network.  

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44 
8.24.3 
1. The radio will ring (like a telephone), indicating you are receiving a Selective Call.  
Accepting a Selective Call 
2. Press  ,  , or  buttons to accept the incoming Selective Call.  
3. “CONNECT” appears in the display, followed by “Lim 10 Min.,” “SEL CALL,” and the alias of the 
caller, once the call is established. 
8.24.4 
When a Selective Call is received (the radio is ringing), you can reject the call by pressing 
Rejecting a Selective Call 
 or  .  The 
call is rejected and “Reject” appears on the callers display. 
8.24.5 
Terminate a Selective Call (call must be active) by pressing the 
Terminating a Selective Call 
  or    button.  “HANGUP” will 
appear in the display followed by the active talk group. 
8.25 SELECTIVE ALERTS 
Selective alert messaging is an OTP feature that allows one of up to eight (8) pre-programmed (canned) 
text messages to be sent from one radio to another. The sender specifies a destination (receiving) radio, 
selects one of the pre-programmed text messages, and then transmits it to the destination radio.  The 
message delivery system adds sender and time-of-day information and forwards the message to the 
destination (receiving) radio.  The sending radio receives a brief message noting the status of the 
transmission.  
Received messages are stored in the radio until deleted or until the radio is rebooted.  Received messages 
do not survive a reboot. 
8.25.1 
All selective alert messages are pre-defined. The messages are programmed and provisioned remotely by 
your OpenSky system administrator. The radio user cannot create selective alert message content.  The 
entire selective alert message, including the abbreviation, can be up to 99 characters long. 
Defining Messages 
Table 8-9 lists and defines the messages that may be displayed by the radio during a Selective Alert. 
Table 8-10: Status of Selective Alert Messages 
STATUS 
MESSAGE  DEFINITION 
Alert Sent Alert message successfully sent to target. 
Delivered Alert message passed to network. 
Delivering Delivering alert message to target. 
New alert New alert message received. 
No alerts No alerts are available. 
Busy VNIC congested and cannot deliver message at the current time. 
Dest Down Destination home VNIC down. 
Ignored Destination is either non-responsive or does not care to respond. 
Inv Option Distribution option is invalid. 
Not Reg Destination is not registered. 
Partial Not all destination ESN instances reachable. 
Unauth Alrt Unauthorized service function; initiator is not authorized to send the selected service message. 
Unknown Msg Unknown status received from VNIC. 

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STATUS 
MESSAGE  DEFINITION 
Unreachable Alert destination cannot be reached. 
8.25.2 
The sending process has three steps.  First select the destination radio’s User ID, then select the alert 
message, and finally send the message.  Refer to the procedures in subsections 
Sending a Message 
8.25.2.1 or 8.25.2.2 for 
instructions on selecting a destination for a Selective Alert Message. 
8.25.2.1 Selecting a Destination Using the Keypad (P5570 Only) 
1. Using the keypad, enter *7. 
At the “AlertDst” prompt, enter the full User ID of the unit to send the message.  A shortened User 
ID number can be dialed using the following guidelines: 
• If the radio being called is in the same region and agency – enter only the last four digits. 
• If the radio being called is in the same region, but a different agency – enter the last seven digits. 
• If the radio being called is in another region or if the area is unknown – enter all ten digits. 
2. Press the   key to activate the selection. 
3. Use the   and   buttons, or the   and   buttons to scroll through the available messages until 
the desired message is displayed. 
4. Press the   or   key to send the message. 
5. Observe Status Messages (Table 8-10) to ensure proper delivery. 
8.25.2.2 Selecting a Destination Using the Menu 
1. Using the   or  key, scroll through the menu until “AlertDst” (Alert Destination) appears. 
2. Use the   or   button to scroll through the list of User IDs until the desired destination is displayed 
and press the   key. 
3. Use the    or    buttons to scroll through the available messages until the desired message is 
displayed. 
4. Press the   key to send the message. 
5. Observe Status Messages (Table 8-10) to ensure proper delivery. 
8.25.3 
When a selective alert message is received by a radio, a four-beep tone is heard.  The tone is heard only 
once, but the message “NEWALRT” alternates with the talk group on the main display.  Up to 8 received 
messages can be stored. If a ninth message is received, the first (oldest) message is automatically deleted 
to make room for the new message. 
Receiving a Message 
Received messages are displayed with the time and source information.  
To display a Selective Alert Message: 
1. Using the   or  button, scroll through the menu items until “Alerts Rcvd” appears.  The oldest 
message is displayed and scrolls across the top line of the display. 

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2. The message includes the time, the User ID, and alias of the sender along with the message. 
3. To view the next message, press the   or   button to go forward or backwards. 
8.25.4 
1. Display the message. 
Deleting a Selective Alert Message 
2. Press the   key and   or   to select Y or N. 
3. At the “Delete? Y” prompt, press the   key.  The message will be deleted. 
NOTE
Received messages cannot be saved. 
8.26 MAKING INTERCONNECT CALLS (P5570 ONLY) 
1. Using the keypad, enter *9, followed by the telephone number being called, and the # key (no dashes 
or spaces).  
*9<telephone number># 
Wait a couple of seconds and press and release the PTT button to initiate the call.  An initial ring tone 
will sound to indicate signal call initiation.  Once the gateway picks up the call, the ring tone will 
change.  Press and hold the PTT and talk normally then release the PTT to listen. 
2. To hang up the call, press   the button or the   key. 
8.27 EMERGENCY COMMUNICATIONS 
The P5500 portable radio is capable of sending an emergency alert and making emergency calls on the 
network.  The OpenSky system handles emergency calls with the highest priority, allowing you or the 
people you serve to get needed help.  
Emergency call and alert capability for a profile is configured by the system administrator. 
NOTE
The radio that initiates an emergency alert emits a signal of 3 distinct beeps that only goes 
to the dispatch console.  
Table 8-11: Emergency Calls vs. Emergency Alerts 
EMERGENCY ALERT EMERGENCY CALL 
An Emergency Alert message is sent to 
the dispatcher 
console.  The dispatch 
console plays an emergency tone when it 
receives the message. 
An Emergency Alert message is sent to the dispatcher console.  All peers 
(radios and consoles) and the dispatch console play the emergency tone 
whenever an emergency call is detected.  An emergency tone plays for each 
new emergency, or when a profile is changed, (assuming there is an 
emergency on one of the talk groups for the new profile). 
If the orange LED is flashing rapidly, the radio is receiving an emergency 
call.  If the LED is flashing every ½ second, the selected talk group is in the 
emergency state (although not transmitting).  If the selected talk group is in 
the emergency state, an asterisk displays next to the talk group name. 

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47 
EMERGENCY ALERT EMERGENCY CALL 
No emergency audio (voice) transmission 
(hot-
mic) capability available (per 
programming by system administrator) 
In addition to the Emergency Alert signal, the microphone goes hot for a 
predetermined length of time to allow for emergency audio (voice) 
transmission.  The radio declaring the emergency has channel access 
priority.  Note that the User can also use the PTT after the pre-determined 
hot-mic audio transmission, or during to extend the initial hot-mic audio 
transmission. 
8.27.1 
1. Press the red emergency button on the radio to enter emergency mode. 
Declaring an Emergency Call or Alert 
NOTE
The emergency behavior for the selected profile is configured by the network 
administrator.   
This determines whether pressing the Emergency button sends an 
Emergency Call or just an Emergency Alert.  An Emergency Alert is always part of and 
sent with an Emergency Call. 
If the active profile of the unit initiating the emergency is configured to Emergency Alert, the three-
beep emergency alert signal is sent only to the dispatcher console.  
If the active profile of the unit initiating the emergency is configured to Emergency Call, the three-
beep emergency alert signal is sent to the dispatcher console and to all other radios within the selected 
talk group.  The default emergency talk group becomes the selected talk group.  The display will 
alternate between the emergency talk group name and “EMERGENCY” to indicate that the 
emergency has been initiated. 
2. The microphone is hot (open mic) for a programmed amount of time in order to send your voice out 
on the emergency talk group. 
If the attempt is unsuccessful, “E-PEND” flashes periodically and a retry is queued for 10 seconds. If 
unsuccessful because of lost sync, retry occurs immediately upon reacquiring sync. On each retry attempt, 
the  radio temporarily displays “E-RETRY.” This process repeats until the  emergency is successfully 
declared. 
8.27.2 
When receiving an emergency call, the radio sounds the emergency tone (three short high-pitched tones). 
Receiving an Emergency Call 
The radio will flash “EMERGENCY” and display the alias of the user that triggered the emergency or the 
alias of the talk group (if the incoming talk group is the selected talk group of the receiving radio). 
With “No Scan,” only the emergency tone is heard, not the initial open mic transmission. 
To dismiss or ignore the emergency, refer to Section 8.27.3. 
8.27.3 
The “Dismissing an Emergency” function allows you to “ignore” an emergency declared by another user. 
Dismissing an Emergency 
NOTE
An emergency is dismissed for a configurable amount of time (default = 5 minutes). 
1. After receiving an emergency call, press the   or  button until you see “EmgDismiss.” 

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2. Press the   to toggle “<” on (dismiss) and off. This works in similar fashion to the lock out menu. 
NOTE
The emergency dismiss timer is cleared when the emergency is cleared. 
8.27.4 
Clearing an Emergency Call or Alert 
NOTE
Check with your system administrator to ensure that your radio is configured with the 
ability to clear an emergency. 
1. To clear an emergency, press and hold  .  While holding  , press the emergency button.  Release 
both buttons when the “emergency cleared” tone sounds. 
2. The radio returns to your default selected talk group.  The “EMERGENCY” display is removed from 
the main screen. 
NOTE
If the radio is in stealth mode, clearing the emergency will cause the radio to exit stealth 
mode.  
8.28 OPENSKY ENCRYPTION 
In the OpenSky network, both data and voice use a 128-bit or 256-bit key encryption standard published 
by the Federal Information Processing Service (FIPS), called Advanced Encryption Standard (AES).  
AES is approved by the U.S. Department of Commerce for encryption of classified materials. 
When encryption is enabled on the network, data is encrypted from the MDIS to the Mobile End System 
(MES) (e.g., P5500 portable radio).  This form of encryption provides airlink security. 
Voice encryption is handled either automatically or manually.  Automatic encryption is initiated through 
the Unified Administration Server (UAS) for a specific talk group and requires nothing from the user.  
Manual encryption is initiated by two or more radio users.  Both methods of encryption are discussed in 
the following sections. 
NOTE
When a user transmits encrypted voice, any listening users with different encryption keys 
hear distorted voice and “No Access” appears in the radio display. 
8.28.1 
For automatic encryption, a system administrator will select the talk group to be encrypted at the interface 
to the UAS.  Once the talk groups have been selected and identified as secure, credentials for key 
generation are generated automatically by the system and provisioned to authorized users.  This process 
requires that authorized users login to the network and be authenticated.  Encryption keys require no 
manual handling and are never sent “in the clear” over any network interface or airlink. 
Automatic Encryption 

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49 
8.28.1.1 Using Automatic Encryption 
1. Locate the talk group that has been encrypted at the system administrator level. 
2. “Pls Login” appears in the display (unless the keypad was used to log in). 
3. Log in normally by entering your User ID and Password. 
If a user is engaged in a call on a talk group encrypted at the network administrator level, “Secure Call” 
will appear in the second line of the dwell display if the user is logged in to that talk group. 
If a secure call is in progress elsewhere and the user has not logged in, the bottom of the dwell display 
will alternate between “No Access” and the alias of the radio that is currently engaged in the secure call. 
NOTE
If enabled via programming, a radio can automatically login at voice registration and enable 
voice encryption. 
8.28.2 
Two or more users can manually encrypt a call, if enabled, without an established encrypted talk group.  
A pre-determined “key or code” is required.  Note that while a user is engaged in an encrypted call, users 
within the talk group that are not encrypted can still make standard voice calls on that talk group.  The 
encrypted user can hear the standard unencrypted calls, but cannot respond while still manually 
encrypted. 
Manual Encryption (P5570 Only) 
Manual key entry only affects the currently selected talk group.  All available talk groups within the 
current profile may be independently encrypted.   
NOTE
The key must be pre-determined by the users prior to making a manually encrypted call on 
a talk group and is entered into the radio using the keypad.  For 128 bit encryption, this 
key is between 1 and 16 digits.  For 256 bit encryption, this key is between 17 and 32 
digits. 
8.28.2.1 Using Manual Encryption 
1. Press *32 on the keypad. 
2. Enter the key (1 – 16 digits for 128 bit encryption; 17 – 32 digits for 256 bit encryption). 
3. Press #. 
4. To end manual encryption, press *33. 
If a user is engaged in a call on a talk group that has been manually encrypted at the radio level, the user 
will see “Secure Call” on the bottom of the dwell display. 
If a secure (encrypted) call is in progress, and the user has not entered the key, the bottom of the dwell 
display will alternate between “No Access” and the alias of the radio that is currently engaged in the 
secure call. 
Once the user has terminated manual encryption, “UnSecure” appears temporarily in the bottom line of 
the dwell display. 

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8.29 DYNAMIC REGROUPING  
Dynamic regrouping requires that the network administrator determine which radio users should be 
formed into an impromptu talk group to respond to particular emergency conditions. 
The administrator will edit the personalities of the affected radios to include an emergency profile and 
then page the affected radios to re-register with the network to receive their edited personalities. 
In response, affected radios automatically re-register to receive their edited personalities. During re-
registration, subscriber equipment will default to the emergency profile selected by the administrator. 
8.30 STATUS MESSAGES 
If enabled via programming, the radio can transmit a pre-programmed status message. Section 8.30.1 
describes how to send a status message via the keypad and Section 8.30.2 describes how to send a status 
message via the menu. 
8.30.1 
1. Press *2 <0…9> # on the keypad.  
Send Status Message via the Keypad (System Model Radios Only) 
2. A Status message can be associated with each key (0 – 9). This text is displayed on the first line of the 
display when the key is pressed until another key is pressed. 
• If no messages have been configured, “No Messages” is displayed. 
• If a message is not assigned to a key, “No Entry” is displayed for the keypad sequence. 
• You can press multiple keys to select the desired Status message. 
3. The # key terminates the keypad sequence and sends the currently selected status message. If no 
messages have been configured or no message is associated with the key, no message is sent and an 
error tone is played. 
Press the * key to cancel the keypad sequence. 
8.30.2 
1. Press 
Send Status Message via the Menu 
 or  until “Status Msg” appears and press  . If no messages have been configured, 
“No Messages” is displayed. 
2. Scroll through the available messages using  or  . The configured Status message is displayed on 
the 1st line of the display. 
3. Press the   button to send the currently selected message. If no messages have been configured, no 
message is sent and an error tone sounds.  
Press   or  to cancel status message selection. 
8.31 REQUEST TO TALK (RTT) MESSAGES 
If enabled via programming, the RTT message feature allows you to send either a short service message 
to the VNIC. Section 8.31.1 describes how to send an RTT message via the keypad and Section 8.31.2 
describes how to send an RTT message via the menu. Note that only one RTT message can be 
programmed into the radio. 

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8.31.1 
1. Press *5 <0…9> # on the keypad. The key associated with the RTT message (0-9) is configured via 
programming. 
Send RTT Message via the Keypad (System Model Radios Only) 
2. This message is displayed on the first line of the display when the key is pressed until another key is 
pressed.  
• If no message has been configured, “No Message” is displayed. 
• If a message is not assigned to the key, “No Entry” is displayed for the keypad sequence. 
3. The # key terminates the keypad sequence and sends the currently selected RTT message. If no 
message has been configured or no message is associated with the key, no message is sent and an 
error tone is played. 
Press the * key to cancel the keypad sequence. 
8.31.2 
1. Press 
Send RTT Message via the Menu 
 or  until “RTT Msg” appears and press  . If no message has been configured, “No 
Message” is displayed. 
2. Use  or   to select the message. The configured RTT message is displayed on the 1st line of the 
display. 
3. Press the   button to send the selected message. If no message has been configured, no message is 
sent and an error tone sounds.  
Press   or   to cancel RTT message selection. 
8.32 GPS COORDINATES 
The radio’s current latitude and longitude coordinates may be displayed using the “GPS” menu.  The 
following procedure assumes a GPS antenna is connected to the radio and it is receiving adequate signals 
from GPS satellites. 
1. Press   or  until the “GPS” menu appears in the display.  Current GPS coordinate latitude and 
longitude data continuously scrolls in the top line of the display in a degrees:minutes:seconds format. 
2. Press   or  to change to another menu. 
NOTE
If the internal GPS receiver’s data is expired (30 minutes or more) or unavailable, the 
radio uses the serving base station’s coordinates [GPS (Site) is displayed].  The GPS 
Menu will also indicate if the data is aged (2 minutes or more) [GPS (Aged) is displayed]. 
8.33  V-TAC OPERATION 
8.33.1 
In addition to all standard portable radio operating capabilities, Extended Coverage adds the V-TAC’s 
bridging (vehicular repeat) functionality for accessing the OpenSky radio network. Each portable radio 
connected to the V-TAC using Extended Coverage is considered a “client” on the V-TAC. Extended 
Coverage benefits portable radio users since it allows them to get network connectivity using the 
V-TAC’s higher transmit output power and better antenna system.  
Extended Coverage Modes (XCOV, XCOV-TG, and XCOV-PROF) 

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The V-TAC supports three Extended Coverage modes: Extended Coverage for individual users (XCOV), 
Extended Coverage for a talk group (XCOV-TG), Profile Extended Coverage (XCOV-PROF). Typically, 
Extended Coverage is used after the vehicle’s operator has exited the vehicle with a portable radio unit 
and the portable unit requires this bridging functionality to access the OpenSky radio network.  
The V-TAC takes advantage of OpenSky’s TDMA capability to eliminate interference between its local 
and network radio links when operating in an Extended Coverage mode, an undesirable characteristic of 
many traditional vehicular repeater systems. Because the V-TAC employs this technology, interference 
on the network and local radio links is minimized.  
A V-TAC in Extended Coverage mode sends its alias to clients. The alias is displayed in the second line 
of the dwell menu of the client, (“VA <alias>”). The client must be connected to a V-TAC running 
version OTP14.4 or for the V-TAC to provide the alias to the client. If the client is connected to a V-TAC 
running version OTP14.3.1 or earlier, the client displays “VA None.” 
8.33.2 
By default, the specific Extended Coverage mode utilized is determined by commands sent to the V-TAC 
and portable radios from the system administrator or radio installation personnel. These commands 
determine which Extended Coverage mode the V-TAC and radios normally use and determine the access 
method employed by a portable radio to connect to the V-TAC. After these commands are sent to the 
V-TAC and portable radios, each must be rebooted (powered off and then back on) before the change 
takes effect.  
Change Between Extended Coverage Modes  
See the following sections for instructions on how to override this command manually. Note that the 
override is only successful if the V-TAC operating mode matches the manually selected portable V-TAC 
mode.  
8.33.3 
Connecting a portable radio to a V-TAC introduces minor functional limitations.  See the following 
sections for a listing. 
Radio Limitations Using Extended Coverage Modes 
8.33.3.1 Limitations Using Both XCOV and XCOV-TG 
Portable radios connected to the V-TAC using either of the Extended Coverage Modes, XCOV or 
XCOV-TG, will not channel-scan unless they lose radio frequency contact with the V-TAC.  If manually 
enabled, radios will not scan network channels. 
8.33.3.2 Limitations Using XCOV-TG 
The following portable radio keypad functions are disabled when the radio is connected to the V-TAC 
using the XCOV-TG mode: log-off, manual log-in, alerts, selective calls, PSTN calls, and speed dial 
calls.  
The following portable radio menus are disabled when the radio is connected to the V-TAC using the 
XCOV-TG mode: alert destination, alert message, alert received, priority talk group, and scan mode.  In 
addition, the user cannot change talk group or profile. 
8.33.4 
The Extended Coverage for individual users (XCOV) mode allows up to eight (8) client radios to connect 
to the V-TAC.  The radios have full radio functionality including selective calling and mobile data.  
Use XCOV Mode  
With the Extended Coverage for individual users’ (XCOV) mode, V-TAC configuration defines which 
portable radios are permitted V-TAC access.  The radio will automatically connect to a V-TAC if it 

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53 
cannot find a network channel.  The radio can also be manually connected to a V-TAC as indicated with 
the *61# and *62# commands, each determined by the system administrator in the radio configuration. 
8.33.4.1 Manually Accessing the XCOV Mode 
1. Press *61# to manually access XCOV mode.  
P5570 Model Radios 
2. Press *60# to disconnect from XCOV mode.  
1. Press 
All P5500 Model Radios 
 or   until the Client Mode menu appears. 
2. Press   or   until XCOV is displayed. 
3. Press   to confirm mode selection.  The radio reverts to the dwell display and the V-TAC icon is 
displayed. 
8.33.5 
When using the XCOV-TG mode, up to thirty (30) client radios can connect to the V-TAC.  However, 
unlike XCOV, radios connected using XCOV-TG are limited to communicating only on the XCOV-TG 
talk group and emergency communications.  Advanced features such as selective calling and mobile data 
operations are not available to the XCOV-TG connected clients.  
Use XCOV-TG Mode  
The talk group used for XCOV-TG communications is the talk group that was selected at the V-TAC 
when it entered XCOV-TG mode.  Before a radio can connect to the V-TAC, the talk group must be 
selected on the P5500.  If this talk group is not provisioned in the radio’s personality, the radio cannot 
connect to the V-TAC via the XCOV-TG mode.  While connected to the V-TAC via XCOV-TG, a 
different talk group or profile cannot be selected.  
When a portable radio is connected to the V-TAC via XCOV-TG, the V-TAC forwards only the network 
voice traffic on the XCOV-TG talk groups.   
8.33.5.1 Manually Accessing the XCOV-TG Mode 
For the Extended Coverage for a talk group mode (XCOV-TG), a portable radio user is granted access 
and connects to the V-TAC by simply selecting the same Talk Group that the V-TAC had selected when 
it entered the XCOV-TG mode.  Contact the system administrator for questions regarding these aspects. 
During XCOV-TG mode operations, the V-TAC will not disconnect portable radios connected to it.  A 
portable radio user must manually disconnect from the V-TAC by pressing *60 # on the radio’s keypad.  
However, if the V-TAC is switched out of the XCOV-TG mode, all portable radios will be automatically 
disconnected from the V-TAC.  The radios will continue to look for another V-TAC until manually 
disconnected (*60#).  
• Press *62# to manually access XCOV-TG mode.  
P5570 Model Radios 
• Press *60# to manually disconnect XCOV-TG mode. 
1. Press 
All P5500 Model Radios 
 or   until the Client Mode menu appears. 
2. Press   or   until XCOV-TG is displayed. 

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3. Press   to confirm mode selection.  The radio reverts to the dwell display and the V-TAC icon is 
displayed. 
8.33.6 
In XCOV-PROF mode, client attachment to a VTAC is based on profile rather than talk group. 
XCOV-PROF mode allows the transmission and receipt of voice calls on any talk group in the profile as 
opposed to only one talk group. XCOV-PROF allows emergencies on a non-selected talk group based on 
the emergency behaviors of the profile. XCOV-PROF minimizes data traffic between the client and 
VTAC while allowing flexibility of voice functionality. As a result, data services between the client and 
VTAC are disabled. 
Using XCOV-PROF Mode 
Note the following regarding XCOV-PROF mode: 
• The client profile must match the VTAC.  
• The client profile used to connect to the VTAC must have been previously provisioned to the client 
prior to connection. If the profile is not in the client’s personality, the client cannot connect to the 
VTAC. 
• Neither the VTAC nor a client can change the profile once it has entered XCOV-PROF mode. The 
Profile menu will be disabled. 
• Client global profiles are disabled. 
8.33.6.1 Access XCOV-PROF Mode 
P5570 Model Radios Only
• Enter the command *63 # to set the radio to use the XCOV-PROF mode. 
: 
• Press *60 # to disconnect from the XCOV-PROF mode. 
All P5500 Model Radios
1. Press 
: 
 or   until the Client Mode menu appears. 
2. Press   or   until XCOV-PROF is displayed. 
3. Press   to confirm mode selection. The radio reverts to the dwell display and the V-TAC icon is 
displayed. 
8.33.7 
The Scene-of-Incident mode (SOI) is user-selectable.  The SOI mode provides a local repeater function 
(V-TAC) with no network connection. 
Use Scene-of-Incident Mode 
CAUTION
When operating in the SOI mode, the radio is disconnected from the OpenSky network.  
Therefore, communications with radios and dispatch personnel on the network is not 
possible. 
1. Press *4#. 
SOI Mode, Manual Channel Entry (P5570 Model Only) 
2. The radio prompts for the channel.  Enter the channel number and press   to confirm channel. 
3. The radio prompts for the band. Table 8-12 lists valid bands and their definitions. Enter the number 
assigned for the desired frequency band and press   to confirm. 

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4. The radio reverts to the dwell display.  If accepted, you will be switched off the network, and be 
communicating locally through the V-TAC.  
Press *40# or use the Client Mode menu to return to normal operation (Network Mode).  The personality 
and profile in use at the time the radio entered SOI mode is restored. 
1. Press 
SOI Mode, Manual Channel Entry (All P5500 Models) 
 or   until the Client Mode menu appears. 
2. Press   or   until SOI is displayed. 
3. Press   to confirm mode selection. 
4. Press   or   until “Manual Select Chan” is displayed and press  . 
5. Press   or   to edit the right-most digit and press   to advance to the next digit.  Repeat until the 
desired channel is entered. 
6. The radio then prompts the user to edit the band.  Table 8-12 lists valid bands and their definitions.  
Press   or   to edit the number assigned to the frequency band and press   to confirm and enter 
the SOI mode. 
Use the Client Mode menu to return to normal operation (Network Mode).  The personality and profile in 
use at the time the radio entered SOI mode is restored. 
1. Press 
SOI Mode, Pre-Programmed Channel Selection (All P5500 Models) 
 or   until the Client Mode menu appears. 
2. Press   or   until SOI is displayed. 
3. Press   to confirm mode selection. 
4. Press  or   scroll through a list of pre-programmed channels.  
5. Press   to confirm channel and enter SOI mode. 
Use the Client Mode menu to return to normal operation (Network Mode). The personality and profile in 
use at the time the radio entered SOI mode is restored. 

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Table 8-12: Band Definitions 
RF BAND 
RF CHANNEL NUMBER 
0 = SMR 
Band 0: 1-830 
1 = AMPS 
Band 1: 1-600 
2 = BORDER
Band 2: 1-600
3 = 700 MHz Band 1 
Band 3: 1-477 
4 = 700 MHz Band 2 
Band 4: 481-957 
5 = 700 MHz Band 3 
Band 5: 1-477 
6 = 700 MHz Band 4
Band 6: 481-957
7 = 900 MHz 
Band 7: 1-399 
8 = 800 MHz Rebanded 
Band 8: 1-830   
9 = 400 MHz T band WB 
Band 9: 1-6718 
(Independent Separation Between TX and RX) 
10 = 400 MHz T band NB 
Band 10: 1-6718 
(Independent Separation Between TX and RX) 
11 = 400 MHz T band Temp (NYPD only) 
Band 11: 1-120 
14 = 700 MHz reband WB 
Band 14: 1-957 
15 = 700 MHz reband NB 
Band 15: 1-959 

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9. EDACS, CONVENTIONAL, P25 (ECP) OPERATION 
9.1 TURNING ON THE RADIO 
1. Power ON the radio by rotating the POWER ON-OFF/VOLUME knob clockwise. A short alert 
signal (if enabled through programming) indicates the radio is ready to use.  
2. The display shows the last selected system and group or a default system and group (depending on 
programming).  
3. Adjust the POWER ON-OFF/VOLUME knob to the desired volume level.  
4. Select the desired system and group. The display indicates the current system and group names.  
5. The radio is now ready to transmit and receive calls. 
NOTE
In the trunked environment, CC SCAN will be displayed if communication with the 
system's control channel cannot be established. This may occur if, for example, the radio 
is out of range of the trunking site. It may be necessary to move to another location or 
select another trunking system to re-establish the control channel link for trunked mode 
operations. CC SCAN is displayed on the group line until a control channel is accessed. 
9.2 CONTROLS 
The radio features two rotary control knobs,  an emergency button,  and a dual position A/B switch 
mounted on the top of the radio. The Push-To-Talk and two option buttons are located on the side. The 
front mounted keypad has six buttons on the P5550 Scan model and 15 buttons on the P5570 System 
Model Radio. 
Figure 9-1: Top View Figure 9-2: Side View 

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58 
9.2.1 
The functions of the buttons, knob controls, and dual position A/B Switch vary depending on the mode of 
operation.  Their functions while in EDACS (ECP) mode are discussed in the following paragraphs.  
Refer to 
Buttons, Knobs, and Switch 
Figure 9-1 and Figure 9-2.  
Table 9-1: Buttons, Knobs, and Switch Functions 
POWER ON-
OFF/VOLUME KNOB Applies power to and adjusts the receiver’s 
volume.  Rotating the control clockwise 
applies power to the radio.  A single alert tone (if enabled through programming) 
indicates the radio is operational. 
Rotating the control clockwise increases the volume level.  Minimum volume levels may 
be programme
d into the radio to prevent missed calls due to a low volume setting.  
While adjusting the volume the display will momentarily indicate the volume level (
i.e., 
VOL=31
).  The volume range is from a minimum programmed level of zero (displayed 
as OFF in the display) up to 40, which is the loudest level. 
VOICE GROUP 
SELECTION 
CONTROL KNOB 
Selects systems or group/channels (depending on programming).  This is a 16-
position 
rotary knob.  
Note: A mechanical stop, which can limit the positions accessed, i
s shipped with the 
radio but must be installed.  To install the mechanical stop, remove the Voice Group 
Selection control knob, loosen the set screw on the Voice Group Selection control knob 
metal base (using a 1.27 mm hex wrench), and remove the Voice Gro
up Selection 
control knob metal base.  Replace the 16 channel ring with the channel stop ring located 
at the desired channel.  Reinstall the Voice Group Selection control knob metal base, 
tighten the set screw, and reinstall the Voice Group Selection control knob. 
EMERGENCY/ 
HOME BUTTON Automatically selects the pre-
programmed Group/System by pressing and holding for a 
programmed duration.  It can also be used to declare an emergency by pressing and 
holding for a programmed duration. The button must be pre-
programmed for either 
operation, but not both. 
PTT BUTTON Push-To-
Talk must be pressed before voice transmission begins.  In trunked mode the 
radio’s ID is transmitted upon depression of the PTT button.  
SIDE OPTION 
BUTTON 1   Activates one of a numb
er of programmable software options selected during PC 
programming.  Programmable options include hi/low power settings, keypad lock, LCD 
contrast, and LCD and keypad back lighting. 
SIDE OPTION 
BUTTON 2   Exits the current operation (removing all displays 
associated with it) and returns the 
radio to the selected talk group.  Terminates individual and telephone interconnect calls. 
A/B SWITCH In ECP mode, can be pre-
programmed to switch between two available software 
options.   

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59 
9.2.2 
The front mounted keypad of the P5550 “Scan” model has six buttons and P5570 “System” model has 15 
buttons.  Refer to 
Keypad 
Figure 9-3 and Figure 9-4, respectively. 
Figure 9-3: P5550 “Scan” Model Front Panel 
Table 9-2: P5550 Keypad Functions 
KEY  FUNCTION 
Primary Function: Accesses the pre-stored menu.  
Secondary Function: Activates a selected item within the menu. This is similar to an 
“Enter” key. 
    Scrolls thru available menu items. 
 Adds/Deletes selected groups or channels from SCAN list of the currently selected 
system. 
 Toggles SCAN operation ON and OFF. 
 Activates one of any programmable software options selected during the PC 
programming, including: high/low TX power and talkaround. 

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60 
Figure 9-4: P5570 “System” Model Front Panel 
Table 9-3: P5570 Keypad Functions 
KEY  FUNCTION 
Primary Function: Accesses the pre-stored menu.  
Secondary Function: Activates a selected item within the menu. This is similar to an 
“Enter” key. 
Primary Function: Allows the user to scroll through available systems, groups, or 
channels, depending on personality programming.  
Secondary Function: Changes the selection for an item within a list. 
Primary Function:  Refer to the separate key definitions within this table. 
Secondary Function: These keys function much as a typical DTMF telephone pad 0-9, 
*, and # keys; and are used to place telephone interconnect and individual (unit-to-
unit) calls. 
Selects a specific system.  If the rotary knob is used to select the system and more 
than 16 systems are programmed in the radio, the   key is used to select additional 
banks (groupings) of systems. 
Selects a specific group. 
Turns the Scan operation ON and OFF. 
 Enables or disables Private Mode (encryption) for the system/group/channel 
displayed. 
Adds groups or channels from the currently selected system to the Scan list. 
 Status.  Access to the status list (0-9).  The Status key permits the transmission of a 
pre-programmed status message to an EDACS site. 
 Message.  Access to the message list (0-9).  The Message key permits the 
transmission of a pre-programmed message to an EDACS site. 
 Deletes selected groups or channels of the currently selected system from the Scan 
list. 
Initiates telephone interconnect calls. 
Initiates individual unit-to-unit calls. 

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61 
9.3 DISPLAY 
The radio display is made up of 3 lines (see Figure  9-5). Lines 1 and 2 contain eight alphanumeric 
character blocks and are used primarily to display system and group names. Line 1 also displays radio 
status messages. The 3rd line is used primarily to display radio status icons. All three lines are used to 
display menu options when in the menu mode. If programmed, the display backlighting will illuminate 
upon power up or when radio controls are operated.  
Figure 9-5: Radio Display 

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62 
9.4 RADIO STATUS ICONS 
Status Icons indicate the various operating characteristics of the radio. The icons show operating modes 
and conditions and appear on the third line of the display (see Table 9-4). 
Table 9-4: Status Icon Descriptions 
STATUS ICON DESCRIPTIONS 
Steady – During all radio transmissions.  Appears in the 1st position of the display. 
Steady – “Busy” transmitting or receiving.  Appears in the 2nd position of the display. 
Flashing – Call is queued. 
Steady – T99 Mode enabled.  Appears in the 3rd position of the display. 
Steady – Channel Guard enabled.  Appears in the 4th position of the display.  If icon is not visible – Channel Guard is 
disabled. 
Steady – Trunked system in Failsoft™ mode.  Appears in the 4th position of the display. 
Steady – Transmit at low power.  Appears in the 5th position of the display. 
If icon is not visible – Transmit at high power. 
Steady – Transmit in encrypt mode.  Appears in the 6th position of the display. 
Flashing – Receiving an encrypted call. 
Steady – Indicates the current channel is set up as a Project 25 (P25) channel.  Appears in the 7th and 8th positions of 
the display. 
 Steady – Indicates the current channel is set up as a ProVoice channel.  Appears in the 7th position of the display. 
 Steady – Indicates the current channel is set up as an analog channel.  Appears in the 7th position of the display. 
Animated (rotates clockwise) – Scan mode enabled.  Appears in the 9th position of the display. 
If icon is not visible – Scan is disabled. 
 Steady – Group or channel in scan list.  Appears in the 10th position of the display. 
 Steady – Priority 2 group or channel.  Appears in the 10th position of the display. 
 Steady – Priority 1 group or channel.  Appears in the 10th position of the display. 
Steady – Special call mode (individual or telephone).  Appears in the 11th position of the display. 
 Steady – Battery charge indicator.  Appears in the 12th position of the display. 
Flashing – Low battery indicator. 

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63 
Figure 9-6: Full Cycle Battery Charge Indicator 
The battery charge indicator illustrates approximate charge only, based on battery voltage.  Refer to 
Figure 9-6.  
9.5 TRI-COLOR LED 
Figure 9-7: Tri-Color LED 
The Tri-Color LED changes color to indicate radio status and is visible from both the front and top of the 
radio (see Figure 9-7). The colors of the LED and the status they represent while operating in EDACS, 
P25, and Conventional (ECP) modes are defined below.  
Green:    Receiving 
Red:    Unencrypted transmission 
Orange:   Encrypted transmission 

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64 
9.6 RADIO STATUS MESSAGES 
During radio operation, various radio Status Messages can be displayed. The messages are described 
below.  
MESSAGE
NAME 
QUEUED
DESCRIPTION 
Call Queued Indicates the system has placed the call in a request queue.  
SYS BUSY
 System Busy Indicates the system is busy, no channels are currently available, the queue 
is full, or an individual call is being attempted to a radio that is currently 
transmitting. 
DENIED
 Call Denied 
Indicates the radio or talkgroup is not authorized to operate on the selected 
system and/or talkgroup.  
CC SCAN
 Control 
Channel Scan 
Indicates the control channel is lost and the radio has entered the Control 
Channel Scan mode to search for the control channel (usually out of range 
indication). 
WA SCAN
 Wide Area 
Scan Indicates the radio has entered the Wide Area Scan mode to search for a 
new system (if enabled through programming).  
SYSC ON
 System Scan 
Features On Indicates the System Scan features are enabled.  
SYSC OFF 
System Scan 
Features Off Indicates the System Scan features are disabled.  
LOW BATT 
Low Battery Battery 
voltage has dropped to the point to where the radio is no longer 
able to transmit. The radio will still receive calls until the battery is 
discharged beyond the point of operation at which time the radio 
automatically shuts down.  
RXEMER 
Receive 
Emergency 
Indicates an emergency call is being received. This message will be 
flashing on line two.  
TXEMER 
Transmit 
Emergency 
Indicates an emergency call has been transmitted on this radio. This 
message will be flashing on line two.  
VOL=31 
Volume Level Indicates the current volume level.  The volume level display ranges from 
OFF
 (muted) to 
40
 (loudest).  
WHC
 Who Has 
Called Indicates an individual call has been received, but not responded to.  The 
indicator turns OFF if the individual call mode is entered, the system is 
changed, or the radio is turned off and then on again.  
UNKNOWN
 Unknown ID Indicates an individual call is being received from an unknown ID.  

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65 
9.7 ERROR MESSAGES 
If either of the Error Messages shown below is displayed, the radio is programmed incorrectly or needs 
servicing.  
DSP  ERR 
ERR=XXXX 
(PowerUp only)  
or DIG V  x 
ERR    x 
Where xxxx is the error code and DSP ERR or DIG V ERR is the message. 
9.8 ALERT TONES 
The P5500 radio provides audible Alert Tones or “beeps” to indicate the various operating conditions (see 
Table 9-5). 
Table 9-5: Alert Tones 
NAME TONE  DESCRIPTION 
Call Originate one short mid-pitched OK to talk after pressing the push-to-talk button 
Call Queued one high-pitched Call queued for processing 
Autokey one mid-pitched Queued call received channel assignment 
System Busy three low-pitched System busy or unable to complete call 
Call Denied one low-pitched Radio is not authorized on the system or group 
Carrier Control Timer
five high-pitched/one long 
low-pitched PTT depressed for maximum length of time 
Low Battery one low-pitched/one short 
mid-pitched Low battery 
TX Low Battery Alert one low-pitched After PTT - battery too low to transmit 

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9.9 SYSTEM SELECTION 
METHOD 1:  From the control knob: If system selection is programmed to the 
Voice Group 
Selection  control knob
, select a system by turning the knob to the desired system 
number position (1-16).  The display registers the new system name on line one.  
The 
 button can be programmed to provide access to a “2nd 
bank” of 16 system number 
positions (17-32). 
METHOD 2:  From the keypad: If system selection is programmed as the primary function of 
and  select a system by pressing   or  to scroll through the system list.  
The 
display registers the new system name on line one.  
METHOD 3:  (P5570 model radios only) Direct Access: Press   
to enter the system select mode. 
Press the numeric key, which is mapped to the desired system.  Press .  
The radio 
will move to the selected system.  
NOTE
If system selection is programmed to the Voice Group Selection control knob, direct 
access to systems will not be available.  Pressing   or  will scroll through 
different sets of 16 systems each (banks) if more than 16 systems are programmed into 
the radio.  The systems within each bank are then selectable via the Voice Group 
Selection control knob as described previously in METHOD 1. 
Example:  
System: 1 = North Group: 1 = Group 1 
 2 = South    2 = Group 2 
 3 = East    3 = Group 3 
 4 = West    4 = Group 4  
1. Press  . (South is the currently selected system.)  
2. Press  . (Press 4 to select “West” system.) 
3. Press  . (West is the newly selected system.) 
9.10 GROUP/CHANNEL SELECTION 
Several methods can be used to select a new group or channel.  
METHOD 1:  From the Control knob: If group selection is programmed to the Voice Group Selectio
n 
control knob, select a group by turning the Voice Group Selection control knob 
to the 
desired group number position. The display registers the new group name on line two. 
If the knob is moved to a position greater than the number of programmed groups, th
e 
highest programmed group will remain selected. The   
button can be programmed to 
provide access to a “2
nd 
bank” of 16 group number positions (17-32). 
METHOD 2:  From keypad: If group selection is programmed as the primary function of  and 
select a group by pressing  or  
to scroll through the group list. The display 
registers the new group name on line two.  
METHOD 3:  (P5570 model radios only) Direct Access: Press   
to enter the group select mode. 
Press the numeric key mapped to the desired group.  Press .  
The radio will move to 
the selected group.  

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67 
9.11 MODIFY SCAN LIST  
9.11.1 
1. Press 
P5570 Model 
 to toggle scan OFF and verify   is not displayed. 
2. Select group or channel. 
3. Press   once to remove group or channel from list. 
4. Press   once to add as a normal group or channel. 
5. Press   twice to add as a Priority 2 group. 
6. Press   three times to add as a Priority 1 group. 
7. Press   to re-start scanning. 
9.11.2 
1. Press 
P5550 Model 
 to toggle scan OFF and verify   is not displayed. 
2. Select group or channel. 
3. Press   once to remove group or channel from the list. 
4. Press   once to add as a normal group or channel. 
5. Press   twice to add as a Priority 2 group. 
6. Press   three times to add as a Priority 1 group. 
7. Press   to re-start scanning. 
9.12 MENU 
The Menu function accesses features that are not available directly from the keypad. The order and actual 
menu items available is configurable through programming. Upon radio power up, the menu item that is 
at the top of the menu list will always be displayed first. Subsequent access to the menu function will 
return the last menu item that was shown in the display and cursor position. 
1. To enter the menu mode, then press  . 
2. Upon entering the menu selection mode, Menu options will appear in the display (see Figure 9-8). 
Figure 9-8: Menu Display 
3. The radio will continue to receive and transmit normally while in the menu function. 
4. To scroll through the menu options use the   or  keys. When the required menu item has been 
found align the cursor with the option then press   to select it. The menu item's parameter setting 
shown in the display can now be changed by using   or  to scroll through the list of parameter 
values.  

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68 
5. Once the desired setting is reached press   to store the value and return the menu option selection 
level.  
For menu items that display radio information, pressing   or  will scroll through a list of 
informational displays.  Possible menu items are listed in Table 9-6. 
9.12.1 
An example of the backlight menu item selection process and menu item parameter change is shown in 
Menu Item Selection Process 
Figure 9-9. 
1. Press  . The menu mode is entered.  
2. Press   or  until the display shows: 
Figure 9-9: Backlight Menu Item Selection Parameter 
3. Press  .  The backlight menu item is activated. Line one shows the active menu item and its 
current parameter setting. Line two shows the currently selected system or group name (see Figure 
9-10). 
Figure 9-10: Backlight Menu Display 
4. The menu item's parameter setting shown in the display can now be changed by using   or  . 
5. Once the desired setting is reached press   to store the value and return the menu option selection 
level. 
For menu items that display radio information pressing    or  will scroll through a list of 
informational displays. An example of information displays is shown in Table 9-6. 
NOTE
The TX POWER menu item, when selected, toggles LOW/HIGH power.  It does not use 
 or  to scroll nor is an additional press of the   button required. 

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69 
Table 9-6: Menu Item Information 
FEATURE  DISPLAY  PARAMETER 
SETTING  COMMENT 
Keypad Lock KEY LOCK Locked 
Unlocked 
Locks the keypad. To unlock; press and release “M” then 
within 1 second press the option button (NOTE: this 
sequence is also a short cut to locking the keypad.) 
Backlight Adjust  BACKLGHT OFF, 1 thru 6 Selects the light level for backlighting. 
Contrast Adjust CONTRAST 1, 2, 3, 4 Selects the display contrast level. 
Transmit Power Select TX POWER HIGH or LOW Selects radio output power mode. 
Radio Revision 
Information REVISION  N/A Selects the information display to view. Informational display 
only. No user selectable settings. 
Toggle Scan On/Off  SCAN  ON/OFF Toggles Scan operation ON/OFF. 
Toggle Private Mode  PRIVATE  ON/OFF Toggles Private Mode ON/OFF.  
Display Current 
Encryption Key  DISP KEY N/A Displays current encryption key. Informational display only. 
No selectable settings. 
Home Group/Channel. HOME    Returns the radio to the home system/ channel on 
conventional systems and to the home group on trunked 
systems. 
Select Desired System SYS SEL N/A Selects a new system. 
Add Group/Channel to 
Scan List SCAN ADD N/A Adds to Scan List. 
Delete Group/Channel SCAN DEL N/A Deletes Group or Channel from Scan List. 
Add/Delete Scan List SCAN A/D N/A Add or Delete from Scan List. 
Select OpenSky mode MODE    Allows you to activate OpenSky mode. 
Message  MSG    Permits the transmission of a preprogrammed message to a 
P25 or EDACS site. 
ProFile PROFILE ON/OFF  Toggles ProFile On/Off. 
Talkaround  TALKARND  ON/OFF Conventional Only. Toggles Talkaround feature ON/OFF. 
Select Telephone 
Numbers From Phone 
List PHONE N/A EDACS and P25 trunked. 
Data Operation NO DATA ON/OFF EDACS and P25 trunked. Toggles Data Operation ON/OFF. 
Select Individual Call 
from IC List INDV  N/A EDACS and P25 modes. 
Select Group GRP N/A EDACS and P25 modes. 
Feature Encryption 
Display FEATURES N/A Indicates current features programmed into the radio as well 
as certain information required to add features to the radio. 
Informational display only. No user selectable settings. 
System Scan Enable SYS SCAN ON/OFF Toggles System Scan feature ON/OFF. 
Talk-around TALK    Toggles Talk-Around ON/OFF. 
Type 99 Enable T99 EN ON/OFF  Toggles Type 99 Decode ON/OFF. 

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70 
Table 9-7: Information Display 
RADIO ID 
XXXXXXXX LID in EDACS/EA.  In CONV it has no 
meaning. 
RAM SIZ RAM Size 
FLSH SIZ  Flash Size 
RF BAND  Frequency Band 
PERS VER  Software Version 
DSP DATE  Date DSP code was built. 
DSP TIME  Time DSP code was built. 
DSP FEAT The DSP Features supported by the 
DSP code, in Hexadecimal. 
Bit mapped (see IPC spec for details): 
•  0x0001 – Conventional 
•  0x0002 – EDACS 
•  0x0010 – AMPF 
•
  0x0020 – undefined 
DSP VER  DSP Software Version 
FLSH VER  FLASH Software 
ex: P54U0102 
P=portable, 54=5400 radio, 
U=unencrypted, 01=major revision (>50 
means unreleased code), 02=minor 
revision 
HARRIS CORPORATION 
(C) 2007  Copyright 
PERSNLTY  Personality Name 
BLD DATE  Date host (ARM) code was built. 
BLD TIME  Time host (ARM) code was built. 
9.13 BACKLIGHT ON/OFF 
1. Press   to access the menu. 
2. Press   or  to scroll through menu until “BCKLGHT” appears. 
3. Press   to select Backlight menu. 
4. Press   or  to toggle backlight ON and OFF. 
5. Press   to select new backlight setting. 
9.14 CONTRAST ADJUST 
1. Press   to access the menu. 
2. Press   or  to scroll through menu until “CONTRAST” appears. 
3. Press   to select Contrast menu. 
4. Press   or  to adjust contrast setting from 1 - 4. 
5. Press   to select new contrast setting. 

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71 
9.15 DECLARING AN EMERGENCY 
1. Press and hold the red Emergency/Home button (the length of time is programmable; check with the 
system administrator). 
2. *TXEMER*  will flash in the display, plus   and   will be displayed. After 2-3 seconds the 
transmit icon   will turn off. 
3. *TXEMER*  and   will remain until the emergency is cleared.  See Section 9.21 for additional 
emergency operation. 
4. Press the PTT and   will reappear. 
5. Release PTT when the transmission is complete.  
9.16 LOCKING/UNLOCKING KEYPAD 
1. Press   button. 
2. Within 1 second, press the   button on the side of the radio. 
9.17 HIGH/LOW POWER ADJUSTMENT 
Transmit power adjustment is possible if enabled through programming. Within conventional systems, 
transmit power is adjustable on a per channel basis. Within EDACS trunking systems, transmit power is 
adjustable on a per system basis.  
There are two ways to toggle between high and low power, described in Sections 9.17.1 and 9.17.2. 
9.17.1 
1. Press 
Using the Menu Button 
. 
2. Using the   or  keys, scroll until the cursor (>) appears to the left of “TX POWER” in the 
display. 
3. Press   again to toggle between High and Low power. 
4. “POWER = HIGH” or “POWER = LOW” will appear momentarily on the top line of the display. 
9.17.2 
Press the 
Using the Pre-Programmed Option Button 
 button. “POWER = HIGH” or “POWER = LOW” will appear momentarily on the top line of 
the display. 
9.18 ENCRYPTION  
The P5500 portable radio supports AES and DES encryption. When operating on a group or channel 
programmed for encryption, all transmissions are private and the radio receives clear and private signals. 
 is displayed when the encryption is enabled. If the selected group or channel is programmed for auto-
select capability, the mode may be toggled between encrypted and unencrypted by pressing the   key, 
and then selecting the PRIVATE menu option. Radios programmed for forced encryption do not allow a 
change of the transmit mode. 

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9.18.1 
To display the Currently Used Cryptographic Key Number for either the system encryption key (for 
special call such as individual, phone, all, agency or fleet) or the group/channel key (for group or 
conventional calls), perform the following procedure: 
Displaying the Currently Used Cryptographic Key Number 
1. Press the   button. 
2. Use the   or   button to select "DISP KEY." 
3. Use the    or    button to toggle between displaying the system key (Figure  9-11) or the 
group/channel key (Figure 9-12). 
Figure 9-11: System Encryption Key Display 
Figure 9-12: Group/Channel Encryption Key Display 
9.18.2 
All cryptographic keys can be zeroed (erased from radio memory) by pressing the 
Key Zero 
 button and while 
still pressing this button, press and hold the OPTION button. Press both buttons for 2 seconds.  A series 
of beeps will begin at the start of the 2 second period and then switch to a solid tone after the keys have 
been zeroed.  The display will indicate KEY ZERO. 
If the cryptographic key(s) are zeroed, one or more keys must be transferred from the Keyloader into the 
radio before private communications may continue. 
9.18.3 
When receiving, the radio automatically switches between clear or private operation.  If the transmission 
being received is an encrypted transmission, it will be decrypted, the 
Receiving an Encrypted Call 
 icon will be displayed, the receiver 
will unsquelch, and the message will be heard in the speaker.  For this to occur, the selected group or 
channel must be programmed for private operation and the correct cryptographic key must be loaded into 
the radio. 
9.18.4 
1. Select the desired group or channel. 
Transmitting an Encrypted Call 
2. Place the radio in Private Mode by pressing   key; then follow the selection mode rules. On a 
System radio, the   key can be used to toggle the Private Mode ON/OFF. When Private Mode is 
enabled, the   icon is displayed. 
3. If the last state of the radio was Private Mode, the Private Mode will be enabled on power up. Also, 
the Private Mode will be enabled if forced operation has been programmed in the radio.  

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73 
If a group or channel is not programmed for Private Mode operation, PVT DIS will be displayed if 
an attempt is made to enable private transmit mode. It is not possible to operate on this group/channel 
in Private Mode.  
If the radio does not have the correct encryption key loaded, NO KEY# will be displayed and the call 
will not be transmitted. 
4. Continue with standard transmission procedures. A Private Mode access tone will be heard when the 
PTT button is pressed. 
9.19 SCAN OPERATION 
Groups/channels that have been previously added to the scan list on a per system basis may be scanned. 
Each system's scan list is retained in memory when the radio is powered OFF or when the battery pack is 
removed.  
9.19.1 
1. Toggle Scan operation ON by pressing 
Turning Scan On and Off 
 (P5550 model) or   (P5570 model).   icon rotates 
clockwise to indicate radio is scanning.  
2. Toggle Scan operation OFF by again pressing    (P5550 model) or   (P5570 model).   will 
disappear.  
• If the radio scans to a group/channel other than the one selected and then receives a call on the 
selected group, the radio switches to the selected group/channel. However, if the “scanned-to” 
group/channel is programmed at a higher priority the radio remains  on the “scanned-to” 
group/channel. 
• The radio continues scanning if a new group/channel is selected when scan is ON.  
3. Pressing the PTT button when scan is ON will cause the radio to transmit on the displayed 
group/channel or to the currently selected group (depending on programming). 
9.19.2 
P5550 Model Radio 
Add Groups and Channels to a Scan List 
1. Scan must be OFF to add groups/channels to the scan list. If the Scan icon   is ON, press the   key 
to turn Scan OFF.  
2. Select the desired group/channel using the System/Group/Channel control knob and/or the   or 
 keys. If the selected group/channel is currently on the list, pressing   will display   on line 
three.  
3. If the scan list status icon is blank ( ), the group/channel can be added to the scan list by pressing the 
 key.   will be displayed on line three. 
4. Press the   key a second time to set the group/channel to Priority 2. A   is displayed on line three.  
5. Press   a third time to set the group to Priority 1. A   is displayed on line three. The priority level 
section sequence only advances the group/channel to the next high priority level and stops at priority 
level 1. To select a lower priority level, the group/channel must be deleted from the scan list and then 
added back to the scan list. Each new group added to the scan list starts at the lowest priority. If the 
Priority 1 and Priority 2 group/channel are already set and a new group is assigned as Priority 1 or 

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74 
Priority 2, the previously assigned group/channel will change to non-priority scanning. One of the 
following messages may be momentarily displayed. 
SCAN DIS
 The radio is not programmed to scan.  
FIXED P1
 A Priority 1 group has been pre-
programmed into the radio. A new Priority 1 group 
cannot be selected.  
FIXD LST
 A fixed scan list has been pre-
programmed into the radio. It is not possible to change 
the list without reprogramming the radio.  
NOTE
To quickly view multiple group scan status, press   then slowly rotate the group knob. 
Each group status will appear on the display. 
P5570 Model Radio 
1. With scan operation turned OFF, select the desired group/channel to add to the selected scan list.  
2. Press  . The current priority status of the group/channel will be displayed in column 10 of line 
three for a time-out period. If the group is not part of the scan list, the status will be blank.  
3. While the status is displayed, press   to add the group/channel to the scan list.  The   icon is 
displayed on line three.  
4. Press   a second time to set the group to Priority 2. The   icon is displayed on line three.  
5. Press   a third time to set the group/channel to Priority 1. The   icon is displayed on line three. The 
priority level selection sequence only advances the group/channel to next higher priority level and 
stops at priority level 1. To select a lower priority level, the group/channel must be deleted from the 
scan list and then added back to the scan list. Each new group/channel added to the scan list starts at 
the lowest priority. If the Priority 1 and Priority 2 group/channel are already set and a new 
group/channel is assigned as Priority 1 or Priority 2, the previously assigned group/channel will 
change to non-priority scanning. One of the following messages may be momentarily displayed. 
SCAN DIS
 The radio is not programmed to scan.  
FIXED P1
 A Priority 1 group/channel has been pre-
programmed into the radio. A new Priority 1 
group cannot be selected.  
FIXD LST
 A fixed scan list has been pre-
programmed into the radio. It is not possible to change 
the list without reprogramming the radio.  
NOTE
To quickly view multiple group scan status, press either   or the   key. Then slowly 
rotate the group knob.  Each group/channel status will appear on the display. 
9.19.3 
P5550 Model Radio 
Deleting Groups from a Scan List 
1. With scan operation turned OFF, select the desired group/channel to delete from the selected scan list.  

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75 
2. Press  . The current status of the group/channel is displayed for a time-out period.  
3. While the current status is displayed, press   until the group/channel from the scan list is "blank." 
The sequence is "blank,"   ,   ,   , "blank." Any group that is not in a scan list will show a "blank" 
for the time-out period when it is the selected channel. 
P5570 Model Radio 
1. With scan operation turned OFF, select the desired group/channel to delete from the selected scan list.  
2. Press  . The current status of the group/channel is displayed for a time-out period.  
3. While the status is displayed, press   to delete the group/channel from the scan list.   ,   ,or   
turns OFF. Any group/channel that is not in a scan list will show a "blank" for the time out period 
when it is the selected group/channel. 
9.19.4 
A group/channel can also be deleted from the scan list, if it is not the currently selected group/channel, by 
pressing the 
Nuisance Delete  
 key (P5550 model) or the   key (P5570 model) during scan operation while the radio 
is displaying the unwanted group/channel. The group/channel will be deleted from the scan list in the 
same manner as if done using the steps above. Deletions done in this manner will not remain deleted if the 
radio is powered OFF and then powered ON. 
9.20 SYSTEM SCAN (EDACS AND P25 TRUNKED) 
The radio can be programmed using Radio Personality Manager (RPM) with the following System Scan 
features. Then these features are automatically enabled when the radio is powered ON. A key or menu 
option is also defined to allow the System Scan features to be toggled during radio operation. The System 
Scan state will be maintained through system changes but will default to ON when the radio is powered 
ON. 
Enable/Disable via Menu Selection 
Press   and then use the   or  buttons to scroll through the selections until SYS SCAN is 
displayed. Then press   to toggle the System Scan state. The SYSC ON or  SYSC OFF display 
message is displayed for two seconds to show the new state. 
Enable/Disable via Pre-Programmed Keypad Key 
Press the key pre-programmed to toggle System Scan and the SYSC ON or SYSC OFF display message 
is displayed for two seconds to show the new state. 
9.20.1 
The P5500 series radio can be pre-programmed through RPM for Wide Area System Scan operation for 
roaming across mobile systems.  EDACS radio systems manage the radios assigned to the system via a 
control channel (CC).  Upon the loss of the currently selected system's control channel, radios can be 
programmed to automatically scan the control channels of other systems. If a new control channel is 
found, the radio will switch to the new system and sound an alert tone. 
Wide Area System Scanning 
9.20.2 
The radio can also be pre-programmed for Priority System Scan.  The priority system is the desired or 
preferred system.  While receiving the control channel of the selected system, the radio will periodically 
leave the selected system and search for the control channel of the priority system.  This is done at a pre-
programmed rate defined by the value in the Priority Scan Time control, unless the ProScan™ algorithm is 
Priority System Scan 

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76 
enabled, as explained in the following sections.  This priority scan timer is reset each time the PTT button 
is pressed or when the call is received.  If the priority system control channel is found, or meets the 
predefined criteria (ProScan), the radio will automatically switch to the priority system. 
9.20.2.1 Enabling the Wide Area System Scan Function 
If the radio cannot find the control channel of the selected system and begins to wide area system scan, 
the radio will only scan for the priority system control channel if the priority system is in the wide area 
scan list. 
9.20.2.2 When ProScan is Enabled 
The radio monitors the priority system and will switch to the priority system if the pre-preogrammed 
criteria ProScan options are met.  If ProScan is enabled, the rate at which the radio will scan for the 
priority system is defined by the System Sample Time control, set in RPM, (refer to RPM On-Line Help).  
See Section 9.20.3 for more information on ProScan. 
9.20.3 
The radio may be programmed for ProScan system scan operation for multi-site applications.  ProScan is 
a multi-site system scanning algorithm.  ProScan provides the radio with the ability to select a new 
system for the radio to communicate on, when the selected system drops below a predefined level.  This 
algorithm enables each radio to analyze the signal quality of its current control channel and compare it 
with the signal quality of the control channel for each site in its adjacent scan list.  The signal quality 
metric used for the ProScan algorithm is based on a combination of both Received Signal Strength 
Indicator (RSSI) and Control Channel Verification (CCV) measurements.  When the selected system 
degrades to a pre-programmed level, the radio will begin to look for a better control channel.  Once a 
control channel that exceeds the pre-programmed parameters is found, the radio will change to the new 
system and emit a tone (if enabled through programming).  If the control channel is completely lost, the 
radio will enter Wide Area System scanning and search the programmed adjacent systems until a suitable 
control channel is found. 
ProScan 
9.21 EMERGENCY OPERATION 
The radio's ability to declare an emergency, clear an emergency, remain locked on an emergency system 
and group, and the emergency audio and display freeze can each be enabled or disabled through 
programming.  When an emergency is declared scanning will stop and restarts only after the emergency 
has been cleared. 
9.21.1 
When receiving an Emergency Call on the selected group and system, an alert beep is heard and 
Receiving an Emergency Call 
 is 
displayed. The message *RXEMER* flashes in the display on line two until the emergency condition is 
cleared. 
9.21.2 
Perform the following steps to send an emergency call to a selected system and group (or on an optionally 
pre-programmed group).  
Declaring an Emergency Call 
1. Press and hold the red EMERGENCY button that is on top of the radio in front of the antenna for 
approximately one second (this time is programmable and therefore could be longer or shorter; check 
with the system administrator). The radio will transmit an emergency call request with the radio ID 
until an emergency channel assignment is received.  

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77 
2. When the working channel assignment is received, the radio sounds a single beep indicating the radio 
has auto keyed (see Table 9-5) and is ready for voice transmission. *TXEMER* flashes on line two in 
the display until the emergency is cleared.  
3. Press PTT and speak into the microphone in a normal voice.   and   momentarily turn ON.  
4. Release PTT when the transmission is complete.  
To clear the emergency first press and hold the   button. While continuing to hold the   button, press 
the EMERGENCY button. (This will work if the radio is programmed to clear emergencies.) 
9.22 INDIVIDUAL CALLS (EDACS AND P25 MODES) 
9.22.1 
When the radio receives an individual call (a call directed only to the user's radio), it un-mutes on the 
assigned working channel and displays 
Receiving and Responding to an Individual Call 
. The first line on the display shows the logical ID number of the 
unit sending the message, or the associated name if the ID number is found in the individual call list. The 
radio can be programmed to ring when an individual call is received. If enabled, the ring begins five 
seconds after the caller un-keys and will continue until the PTT button, the   button or the individual call 
mode is entered. 
NOTE
The volume of the ring is adjustable through the volume control levels. 
If a response is made by pressing the PTT to the call prior to the programmed call-back time-out, the call 
will automatically be directed to the originating unit. If a response is not made before the call-back time-
out, the radio will return to normal receive display, and *WHC* will appear on the first line of the LCD.  
To respond after the call-back time-out, press the   key. The radio's display will show the callers ID on 
the first line and WHCI=1 on the second line. Pressing the PTT button at this point will initiate an 
individual call back to the original caller.  
The radio stores the IDs of the last 10 callers in the Calls Received List as shown. Individual calls are 
stored in the top half of the list (1-10) and Group calls are stored in the bottom half of the list (1-10). The 
most recent call is stored in position 1, the second most recent call is stored in position 2, etc. 
Figure 9-13: Calls Received Lists 

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78 
To access the Calls Received List, press the   key twice. Use the   or  buttons to scroll through 
the list. Pressing the   key will display the time elapsed since the call was received. After pressing   
the display will appear similar to Figure 9-14. 
Figure 9-14: WHC Individual Call Display 
Pressing the PTT will initiate an individual call to the displayed logical ID. Powering the radio OFF and 
ON will clear this list. 
9.22.2 
9.22.2.1 Pre-Stored Individual Calls 
Sending an Individual Call 
The following procedures describe how to initiate and complete a Pre-Stored Individual Call. 
P5570 Model Radio 
1. To select a pre-stored individual phone number, enter the individual call mode using the   key.   is 
displayed. Then scroll through the list of stored numbers using the   or  keys.  
2. Press the PTT button; when the radio is clear to transmit,   turns ON,   turns OFF and the channel 
access tone sounds. Line one shows the called individual's name if found in the list of stored 
individuals or LID followed by the logical ID number of the unit being called. The message *INDV* 
displays on line two. 
P5550 Model Radio 
1. To select a pre-stored individual number, enter the menu mode by pressing the   key. Scroll 
through the mode list using the   or  buttons.  
2. Press  .   is displayed. Scroll through the list of stored phone numbers using the   or  
buttons until the desired number is displayed. Press  . 
3. Press the PTT button; when the radio is clear to transmit   turns ON,   turns OFF and the channel 
access tone sounds. Line one shows the called individual's name or LID. The message *INDV* 
displays on line two. 
9.22.2.2 Direct Dial Individual Calls (P5570 Model Only) 
1. The following procedure describes how to initiate and complete a Direct Dial Individual Call. 
2. The individual call ID is not stored in the pre-stored list of call IDs but the individual unit ID is 
known, it can be entered directly from the keypad. 
3. Press and hold the PTT button to transmit.   will turn ON,   will turn OFF, and the channel access 
tone will sound. Line one shows the called individual's ID followed by the logical ID number of the 
unit being called. The message *INDV* displays on line two. Proceed talking into the microphone. 

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79 
9.22.3 
There are two lists available for call storage in the P5500 series radios, the calls received list (1 - 10) and 
the personality list (1 - 99 as defined by the user). When the individual call mode is entered by pressing 
Call Storage Lists 
, the calls received list is available. The user can toggle to the personality list by selecting any index 
other than 0 or toggle between the two lists by pressing the   key. If wrap is enabled, the calls received 
list wraps on itself and not into the other list. 
Figure 9-15: Calls Received and Personality Lists 
The saved call list shows all ten storage locations. If no calls have been received, the saved call list will be 
empty and the pre-stored list will be available upon entering the individual call mode.  
When in the saved call list, pressing the   key toggles the time stamp ON and OFF. The time stamp 
indicates how long ago the call was received. When in the pre-stored list pressing the   key toggles the 
Logical IDentification (LID) ON and OFF. 
9.23 TELEPHONE INTERCONNECT CALLS (EDACS AND P25 TRUNKED) 
9.23.1 
When the radio receives a telephone interconnect call (a call directed only to the user's radio), it un-mutes 
on the assigned working channel and displays 
Receiving a Telephone Interconnect Call 
. The first line displays  *PHONE*. The second line 
displays *INDV*. Proceed with the call. Press the PTT to talk, release the PTT to listen. 
9.23.2 
9.23.2.1 Pre-Stored Number 
Sending a Telephone Interconnect Call 
Use the following procedures to initiate and complete a Telephone Interconnect call.  
1. P5570 Model: To select a previously stored phone number, press the   key. Use the   or  
buttons to scroll through the list of stored numbers.  
P5550 Model: To select a previously stored phone number, press the   key. Use the   or  
buttons to select the menu option PHN CALL. Press the   key again then use the   or  
buttons to scroll through the list of pre-stored numbers.  
2. Press and release the PTT button. When the radio is clear to transmit,   turns ON,   turns OFF, and 
the channel access tone sounds. Line one shows the accompanying name selected from the list of 

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80 
stored numbers. The message *PHONE* appears  on line two of the display. The radio then 
automatically transmits the programmed number stored in the special call queue.  
3. A telephone ring will be heard from the speaker. When someone answers the phone, press the PTT 
button and speak into the microphone. Release the PTT button to listen to the callee. Unsuccessful 
interconnect signaling returns the radio to the normal receive mode and the number remains displayed 
until the special call is cleared or the time-out expires or another group or system is selected. 
Terminate a call by pressing the   button. 
NOTE
In half-duplex mode, only one person may talk at a time. The radio PTT button needs 
to be pressed in order to communicate to the individual called and released for the 
individual called to be heard. 
9.23.2.2 Direct Dialing of Phone Calls (P5570 Model Only) 
1. If the phone number is not stored in the pre-stored list of phone numbers, but the phone number is 
known, it can be entered directly from the keypad. Start by pressing the   key, then enter the 
required number from the keypad.  Press and release the PTT button. 
NOTE
The last number directly entered can be recalled by first pressing   then pressing the 
PTT button. 
2. A telephone ring can be heard from the speaker. When someone answers the phone, press and hold 
the PTT button and speak into the microphone. Release the PTT button to listen to the individual 
called. Unsuccessful interconnect signaling returns the radio to the normal receive mode and the 
number remains displayed until the special call is cleared or the time-out expires or another group or 
system is selected. 
3. To terminate the call, momentarily press the   button. 
9.23.3 
Once the radio has established a connection to the public telephone system, it may be necessary to “over-
dial” more digits to access banking services, answering machines, credit card calls, or other types of 
systems that require Dual-Tone Multi-Frequency (DTMF) access digits. 
Dual-Tone Multi-Frequency: Overdial 
Overdial operation can also be used to initiate a telephone interconnect call via DTMF signaling if a dial 
tone has already been accessed on the system. This method makes a telephone interconnect call while 
operating in the conventional mode but will also function in trunked mode if a dial tone is directly 
accessible. 
Telephone numbers and other number sequences for overdialing can be stored in the phone list when 
programming the radio. These numbers are accessed by pressing the   key, then following the selection 
mode rules. Perform the following procedures to access and dial these stored numbers. 
P5550 Model Radio 
1. Follow the procedure in Section 9.23.2 to establish a connection to the telephone system or consult 
the system administrator for the procedure to access a dial tone on the trunked or conventional 
system.  
2. Enter selection mode first to enable entry of Overdial numbers by pressing the   button.  

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81 
3. Follow the selection mode rules to call up a stored number from the phone list: Use the   or  
buttons to scroll through the list of stored numbers.   is displayed. Press the PTT to send the overdial 
sequence once. If the number needs to be transmitted again it must be selected or entered again (this 
prevents unwanted numbers from being sent the next time the PTT button is pressed during the call).  
Overdial select/entry mode remains active until the call is dropped, cleared, or   is pressed. The 
overdial select/entry mode can be re-entered if the call is still active by pressing  . 
P5570 Model Radio 
1. Follow the procedure in Section 9.23.2 to establish a connection to the telephone system or consult 
the system administrator for the procedure to access a dial tone on the trunked or conventional 
system.  
2. Overdial numbers are transmitted using one of the following methods: 
METHOD 1:  1. Enter the overdial selection mode by pressing the   button.   
2. Use the   or  buttons to scroll through the list of stored numbers.   
is 
displayed. Press the PTT to send the overdial sequence once. If the number needs to 
be transmitted again it must be selected or entered again (this prevents unwanted 
numbers from being sent the next time the PTT button is pressed during the call).  
Overdial select/entry mode remains active until the call is dropped, cleared, or   
is 
pressed. The overdial select/entry mode can be re-
entered if the call is still active by 
pressing  . 
METHOD 2:  (P5570 model radios only) 
1. Enter the overdial selection mode by pressing the   button.   
2. Press and hold the PTT button 
while entering the overdial number sequence from the 
keypad.  This method sends DTMF tones during individual, telephone interconnect, 
trunked group, or conventional channel calls.  Pr
ess the PTT to send the overdial 
sequence once. If the number needs to be transmitted again it must be selected or 
entered again (this prevents unwanted numbers from being sent the next time the PTT 
button is pressed during the call).  Note: Anytime the PT
T button is pressed and 
held, the keypad is enabled for DTMF entry. 
Overdial select/entry mode remains active until the call is dropped, cleared, or   
is 
pressed. The overdial select/entry mode can be re-
entered if the call is still active by 
pressing  . 
This overdial select/entry mode remains active until dropped, cleared, or   is pressed. The overdial 
select/entry mode can be re-entered if the call is still active by pressing the   button. 
9.24 PRE-STORING INDIVIDUAL AND TELEPHONE INTERCONNECT 
CALLS FROM THE KEYPAD 
Individual Call ID numbers, telephone numbers, and other number sequences for overdialing are stored in 
the special calls lists when programming the radio. The first ten entry locations of these lists can be 
changed by the radio operator. The keypad is used when adding, changing, and storing numbers in these 
entry locations.  
Use the following procedure to store a number in one of the first ten entries of a special call list:  
1. Press the   or   button to enter the individual call list or the phone call list.   is displayed. 
2. Scroll through the list using the   or  keys until one of the first ten entries is reached. NO 
ENTRY is displayed if the location is empty.  

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82 
3. Enter the desired number. If necessary, a pause can be entered by pressing and holding 0-9,  , or 
 until an underscore appears in the display (telephone interconnect only). The individual call list 
entries will accept up to 5 digits. The phone call list entries accept a combination of up to 31 digits 
and pauses.  
4. Press and hold the   key until the display changes indicating that the number has been stored.  
Repeat steps 1-4 to store additional numbers, to change numbers already stored, or to change the storage 
location of a number. 
9.25 STATUS/MESSAGE OPERATION (EDACS AND P25 MODES) 
The Status and Message operations allow for the transmission of a pre-programmed status or a pre-
programmed message to  an EDACS site.  Each Status and Message is assigned an ID then cross-
referenced with the representative status condition (“Off Duty,” for example) or a message (“Call home”).  
In addition, Status conditions can also be associated with a programmable Menu entry (required for 
second method of transmitting a Status condition (see Section 9.25.1). 
9.25.1 
P5570 Model Radio 
Status Operation 
One of two methods can be used to transmit a status condition. 
METHOD 1:  1. Press the   key, then use the   or  buttons to scroll to the pre-
programmed 
status condition. STATUS and 0 through 9 pre-
programmed status selections are 
available from the menu.   
2. 
If STATUS is selected, you need to enter the number of the status condition you 
intend to transmit. If no status has been programmed for the selected number key, the 
radio will display 
NO ENTRY
. A valid selection will display  the status for a pre-
programmed time. 
After the time-out expires or the   key has been pressed (the   
key will override the 
time-
out period), the status is selected and will be transmitted to the site or stored in the 
radio memory where it can be polled by the site at a future time.  
METHOD 2: 1. Press the   key.  
2. Press the corresponding pre-programmed 0 through 9 status condition key.  
If no 
status has been programmed for the selected number key, the radio will display 
NO ENTRY
. A valid selection will permit the status condition to appear in the 
top 
line of the display and the status ID to appear in the second line of the 
display for a 
pre-programmed time.   
After the time-out expires or the   key has been pressed (the   
key will override the 
time-out period), the status is select
ed and will be transmitted to the site or stored in the 
radio memory where it can be polled by the site at a future time. 
View the currently selected status after it has been transmitted by pressing the   key and then the   
key and then the   button prior to the time-out period. If the status was not sent successfully to the site, 
the text associated with the status condition will flash in the display. 
The status selection can be changed by pressing a different status key 0 through 9, or the status operation 
can be cancelled by pressing Option Button 2  .  Both operations must be carried out prior to the time-
out period.  

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83 
9.25.2 
The following method can be used to transmit a Message using the Message Operation. 
Message Operation 
1. Press the   key. 
2. Press the corresponding pre-programmed 0 through 9 pre-programmed “message” key.  If no message 
has been programmed for the selected number key, the radio will display NO ENTRY.  A valid 
selection will permit the message to appear in the top line of the display and the message ID to appear 
in the second line of the display for a pre-programmed time.   
The message selection can be changed by pressing a different message key 0 through 9, or the message 
operation can be cancelled by pressing Option Button 2  .  Both operations must be carried out prior to 
the pre-programmed time-out period.  
9.26 DYNAMIC REGROUP OPERATION (EDACS) 
Dynamic Regroup Operation permits multiple talk groups (up to eight) to be added to a radio via the 
system manager. The radio must be pre-programmed to respond to regrouping. Dynamic regrouping will 
not be activated in a radio until the system manager sends an activation message. Each radio that receives 
and acknowledges the regrouping instructions is successfully regrouped.  
Pressing and holding the   button for 2.5 seconds toggles the user into and out of the dynamic regroup 
groupset. A double beep will sound for entry or exit. The display will indicate REGRP_0x where "x" is a 
digit of 1 to 8 indicating the group (when dynamic regroup has been enabled by the user). If the radio is in 
dynamic regroup and the user selects a group that has not been regrouped, the display will show NO 
ENTRY. The radio will be prevented from transmitting and receiving calls in this condition except for 
scanned groups.  
After the time-out expires or the   key has been pressed (the   key will override the time-out 
period), the status is selected and will be transmitted to the site or stored in the radio memory where it can 
be polled by the site at a future time. 
9.26.1 
If the pre-programmed groupset on the currently selected system contains an EMER/HOME group and 
the radio is in dynamic regroup, the radio will declare the emergency on the currently selected dynamic 
group. 
Emergency Operation  
9.27 MACRO KEY OPERATION 
Macro key operation permits the user to accomplish a series of keystrokes with a single "macro" 
keystroke. Each Macro Key is capable of executing up to twenty (20) keystrokes, to any push button input 
(i.e., keypad keys, OPTION buttons, etc.). Each macro key can be pre-programmed to activate when 
pressed or when released.  
A macro key may also be pre-programmed to change the key stroke sequence the next time the macro key 
is activated.  
For detailed operation and assignment of macro keys, contact your communications supervisor or 
administrator. 
9.28 PORTABLE DATA (EDACS AND P25 MODES) 
The  P5500 series portable radios, when operating in the EDACS Trunked  configuration, permit both 
voice and data calls to be transmitted and received. The radio can handle only one type of call at a time; 

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84 
however, either data or voice is selected transparently by the operator through normal usage of the radio. 
Data communications is not supported in conventional mode.  
The radios can be connected to a Mobile Data Terminal (MDT) or to a host computer. Any RS-232 
compatible device that supports the Radio Data Interface (RDI) protocol (Version 1.91 or greater) may be 
connected to the radio. Support for an MDT or  a host computer is a programmable option per radio. 
Additionally, radios may also be programmed for data only operation (no voice calls transmitted or 
received). 
9.28.1 
The following will be displayed during the various states of data mode of operation: 
Displays 
TX DATA
 Appears on top line of display when the radio is transmitting a data call.  
RX DATA
 Appears on top line of display when the radio is receiving a data call.  
DATA OFF
 Appears on top line of display when the radio is in the data disabled state.  
DATA ON
Appears for two seconds on top line of display when the radio is toggled to the data 
enabled state.  
9.28.2 
The radio can be placed in the data disabled state by any of the following methods. When the data state is 
disabled, DATA OFF appears on the top line of the display.  
DATA OFF Operation 
• Declaring an emergency (not to be used unless an actual emergency condition exists). Alert tone will 
sound.  
• Pressing Option Button 1   (if pre-programmed as “no data” key). Alert tone will sound.  
• Pressing the pre-programmed “no data” (ND) key.  Refer to previous bullet. 
9.28.3 
The data state is enabled by one of the following (depending on how it was disabled). DATA ON will 
appear on the top line in the display for two seconds then the display will return to normal.  
DATA ON Operation 
• Pressing the pre-programmed “no data” (ND) key toggles data state ON or OFF.  
• Clearing an emergency. This is valid only if the emergency caused “DATA OFF” operation. 
9.28.4 
Under normal conditions, the radio enters the scan lockout mode and returns to the control channel after 
completion of a data call (transmit or receive). If, during a data call, one of the following operations 
occurs, the data call is immediately terminated and the radio performs the desired function:  
Exiting Data Calls 
• If the PTT is activated. 
• If an Emergency is declared by pressing the pre-programmed emergency button. 
• If a group or system is changed. 
9.28.5 
Following the transmission or reception of a data call, if scan is enabled, scanning will stop temporarily.  
There are two independent pre-programmed times associated with this mode; one after a received data 
Scan Lockout Mode 

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85 
call and one after a transmitted data call. During this time the scan indicator will flash to indicate that scan 
is enabled but temporarily suspended. This condition typically returns to normal scan operation when the 
pre-programmed time expires; however, the following operations and conditions will terminate the scan 
lockout mode before the timeout has expired. 
• Press the   button.  
• Press the PTT.  
• Change a group or system.  
• Enter Telephone Interconnect mode.  
• Enter Individual call mode.  
• Receive a new emergency assignment.  
• Declare or clear an emergency.  
• Receive an individual or phone call.  
• Receive an Agency, Fleet, or System All Call. 
• Press   (P5550 model) or   (P5570 model) to toggle Scan ON or OFF. 
9.28.6 
During the voice call scan hang time (pre-programmed) the radio will not receive data calls. 
Data Lockout Mode 
9.29 TYPE 99 OPERATION (ANALOG CONVENTIONAL) 
Type 99 is a conventional in-band, two-tone sequential signaling method.  This conventional signaling 
protocol controls the muting and unmuting of a radio.  Type 99 encoded base stations, mobiles, or 
portables can selectively call individual units or groups of units in a conventional system.  Type 99 is 
used in paging operations providing a dispatcher with the ability to selectively call a radio or a group of 
radios.  If Type 99 is enabled in the radio personality, the radio can decode Individual, Group, and 
Supergroup Type 99 calls.  
In a selective signaling environment, the P5500 portable radios operate in one of two states, Monitor 
mode or Selective Call mode.  
• In Monitor mode, Type 99 “OFF,” the decoder is disabled and all calls are heard by the user.  
• In Selective Call mode, Type 99 “ON,” the decoder is enabled and only calls intended for the user 
will be heard.  
9.29.1 
Selective signaling operates with or without Channel Guard.  If Channel Guard is enabled, the radio can 
be programmed with an "And" or an "Or" option, determined by programming with T99 Mute Control.  
Type 99 with or without Channel Guard  
• If the "And" option is programmed, T99 calls require the correct selective signaling (T99 tone 
sequence) AND the correct Channel Guard tones are heard by the user.  
• If the "Or" option is programmed, calls with the correct Channel Guard tones OR  calls with the 
correct T99 tone sequence and Channel Guard tones are heard by the user.  
A radio operating in Selective Call mode that receives a selective call switches to the Monitor mode (after 
decoding the T99 call) and the TX/RX LED flashes green.  The TX/RX LED indicates whether the 
channel has a carrier signal.   

14221-1400-2000   
86 
9.29.2 
After decoding a Type 99 call, the radio operates in Monitor mode and all traffic on the channel is 
audible.  If the channel has Channel Guard, only the traffic with the radio's Channel Guard tone will be 
heard. To reset Type 99 operation, use one of the following methods:  
Resetting Type 99 after a Call  
• Press the   button.  
• Press the   button, if enabled through programming to toggle Type 99 ON/OFF.  
• Allow the "Auto-Reset" timer, if enabled through programming, to reset the Type 99 decoder.  
9.29.3 
The radio may be programmed with the Type 99 Disable after PTT feature, which automatically disables 
the Type 99 decoder after a transmission. Use one of the methods outlined in Section 
Type 99 Disable after PTT  
9.29.2 section to 
reset Type 99 operation.  

 14221-1400-2000 
87 
10. CUSTOMER SERVICE 
10.1 CUSTOMER CARE 
If any part of the system equipment is damaged on arrival, contact the shipper to conduct an inspection 
and prepare a damage report.  Save the shipping container and all packing materials until the inspection 
and the damage report are completed.  In addition, contact the Customer Care center to make 
arrangements for replacement equipment.  Do not return any part of the shipment until you receive 
detailed instructions from a Harris representative. 
Contact the Customer Care center at http://www.pspc.harris.com/CustomerService or: 
Phone Number:  1-800-368-3277 
North America: 
Fax Number:   1-321-409-4393 
E-mail: PSPC_CustomerFocus@harris.com  
Phone Number:  1-434-455-6403 
International: 
Fax Number:  1-321-409-4394 
E-mail: PSPC_InternationalCustomerFocus@harris.com  
10.2 TECHNICAL ASSISTANCE 
The Technical Assistance Center's (TAC) resources are available to help with overall system operation, 
maintenance, upgrades and product support. TAC is the point of contact when answers are needed to 
technical questions. 
Product specialists, with detailed knowledge of product operation, maintenance and repair provide 
technical support via a toll-free (in North America) telephone number. Support is also available through 
mail, fax and e-mail.  
For more information about technical assistance services, contact your sales representative, or call the 
Technical Assistance Center at: 
North America:   1-800-528-7711 
International:    1-434-385-2400 
Fax:      1-434-455-6712 
E-mail:     PSPC_tac@harris.com  

14221-1400-2000   
88 
11. BASIC TROUBLESHOOTING 
Use the contents of Table  11-1  as a troubleshooting guide if the radio is not  functioning properly. If 
additional assistance is required, contact a qualified service technician or call TAC support at 
1-800-528-7711.  
Table 11-1: Troubleshooting 
SYMPTOM POSSIBLE CAUSE POSSIBLE SOLUTION 
Radio will not turn on. Low battery charge. Change the battery pack to a fully charged pack. 
No Audio Speaker volume is muted. Increase the volume level. 
Poor Audio 
User is in a poor coverage 
area or not on the network. Move to a better coverage area. 
Radio powers off for 
no apparent reason. 
Radio may be experiencing 
very low voltage.  Have the battery checked by an authorized technician. 
Radio will not 
transmit. 
Radio may be out of 
coverage area or may be 
overheated. 
Return to coverage area if possible. If overheated, let 
radio cool before retrying transmission. Report this failure 
to an authorized technician. 

 14221-1400-2000 
89 
RECHARGEABLE BATTERY WARRANTY 
A.  Harris Corporation, a Delaware Corporation, through its RF Communications Division (hereinafter "Seller") warrants to 
the original purchaser for use (hereinafter "Buyer") that nickel-cadmium, nickel-metal hydride, lithium-ion, and lithium-
polymer batteries supplied by Seller shall be free from defects in material and workmanship, and shall conform to its 
published specifications for a period of twelve (12) months from the date of purchase. 
B.  For purposes of this warranty, batteries shall be deemed defective if (1) the battery capacity is less than 80% rated 
capacity, or (2) the battery develops leakage. 
C. If any battery fails to meet the foregoing warranty, Seller shall correct the failure by issuing a replacement battery upon 
receipt of the defective battery at an Authorized Service Center (ASC) or Seller factory (for OpenSky® Equipment only). 
D. Replacement batteries shall be warranted only for the remaining unexpired warranty period of the original battery. This 
warranty becomes void if: 
1. The battery has been subjected to any kind of misuse, detrimental exposure, or has been involved in an accident. 
2. The battery is used in equipment or service other than the radio equipment for which it is specified. 
E.  The preceding paragraphs set forth the exclusive remedies for claims based upon defects in or non-conformity of any 
battery, whether the claim is in contract, warranty, tort (including negligence), strict liability or otherwise, and however 
instituted. Upon the expiration of the warranty period, all such liability shall terminate. The foregoing warranties are 
exclusive and in lieu of all other warranties, whether oral, written, expressed, implied or statutory. NO IMPLIED OR 
STATUTORY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL APPLY. 
IN NO EVENT SHALL THE COMPANY BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, SPECIAL, 
INDIRECT OR EXEMPLARY DAMAGES. 
This warranty applies only within the United States. 
To obtain the name and address of an Authorized Service Center (ASC), ask your salesperson, or call one of the factory 
number(s) printed at the bottom of this page. 
Harris Corporation Harris Corporation 
RF Communications Division RF Communications Division 
221 Jefferson Ridge Parkway 1680 University Avenue 
Lynchburg, VA 24501 Rochester, NY 14610 
1-800-528-7711  1-585-244-5830 
ECR-7048D 

14221-1400-2000   
90 
WARRANTY 
Please register this product within 10 days of purchase.  Registration validates the warranty coverage, and enables Harris to 
contact you in case of any safety notifications issued for this product.  
Registration can be made on-line at www.pspc.harris.com/CustomerService or by contacting Harris Warranty Administration at 
the following: 
Phone Number:  1-800-368-3277, Option 4 (toll free) 
U.S. and Canada: 
Fax Number:  1-434-455-6821  
E-mail:    mailto:WarrantyClaims@Harris.com  
Phone Number:  1-434-455-6403 
International: 
Fax Number:  1-434-455-6676 
E-mail:    mailto:WarrantyClaims@Harris.com
A. Harris Corporation, a Delaware Corporation, through its RF Communications Division (hereinafter "Seller") warrants to the 
original purchaser for use (hereinafter "Buyer") that Equipment manufactured by or for the Seller shall be free from defects 
in material and workmanship, and shall conform to its published specifications. With respect to all non-Seller Equipment, 
Seller gives no warranty, and only the warranty, if any, given by the manufacturer shall apply.  Rechargeable batteries are 
excluded from this warranty but are warranted under a separate Rechargeable Battery Warranty (ECR-7048). 
B. Seller’s obligations set forth in Paragraph C below shall apply only to failures to meet the above warranties occurring within 
the following periods of time from date of sale to the Buyer and are conditioned on Buyer’s giving written notice to Seller 
within thirty (30) days of such occurrence: 
1.  for fuses and non-rechargeable batteries, operable on arrival only. 
2.  for parts and accessories (except as noted in B.1), ninety (90) days. 
3.  for P7300, P7200, P7100IP, P5400, P5300, P5200, P5100, P3300, M7300, M7200 (including V-TAC), M7100IP, 
M5300 and M3300 radios, two (2) years, effective 10/01/2007. 
4.  for Unity® XG-100P, three (3) years. 
5.  for all other equipment of Seller’s manufacture, one (1) year. 
C. If any Equipment fails to meet the foregoing warranties, Seller shall correct the failure at its option (i) by repairing any 
defective or damaged part or parts thereof, (ii) by making available at Seller’s factory any necessary repaired or 
replacement parts, or (iii) by replacing the failed Equipment with equivalent new or refurbished Equipment. Any repaired or 
replacement part furnished hereunder shall be warranted for the remainder of the warranty period of the Equipment in 
which it is installed. Where such failure cannot be corrected by Seller’s reasonable efforts, the parties will negotiate an 
equitable adjustment in price. Labor to perform warranty service will be provided at no charge during the warranty period 
only for the Equipment covered under Paragraph B.3 and B.4. To be eligible for no-charge labor, service must be 
performed at Seller’s factory, by an Authorized Service Center (ASC) or other Servicer approved for these purposes either 
at its place of business during normal business hours, for mobile or personal equipment, or at the Buyer’s location, for 
fixed location equipment. Service on fixed location equipment more than thirty (30) miles from the Service Center or other 
approved Servicer’s place of business will include a charge for transportation. 
D. Seller’s obligations under Paragraph C shall not apply to any Equipment, or part thereof, which (i) has been modified or 
otherwise altered other than pursuant to Seller’s written instructions or written approval or, (ii) is normally consumed in 
operation or, (iii) has a normal life inherently shorter than the warranty periods specified in Paragraph B, or (iv) is not 
properly stored, installed, used, maintained or repaired, or, (v) has been subjected to any other kind of misuse or 
detrimental exposure, or has been involved in an accident. 
E. The preceding paragraphs set forth the exclusive remedies for claims based upon defects in or nonconformity of the 
Equipment, whether the claim is in contract, warranty, tort (including negligence), strict liability or otherwise, and however 
instituted. Upon the expirat
ion of the warranty period, all such liability shall terminate. The foregoing warranties are 
exclusive and in lieu of all other warranties, whether oral, written, expressed, implied or statutory. NO IMPLIED OR 
STATUTORY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL APPLY. IN 
NO EVENT SHALL THE SELLER BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, SPECIAL, INDIRECT OR 
EXEMPLARY DAMAGES. 
This warranty applies only within the United States. 
Harris Corporation  Harris Corporation 
RF Communications Division  RF Communications Division 
221 Jefferson Ridge Parkway  1680 University Avenue 
Lynchburg, VA 24501  Rochester, NY 14610 
1-800-528-7711  1-585-244-5830 
ECR-7047L 

Product Safety Manual 
14221-1400-2010 
Sep/11 
This booklet contains important safety information regarding 
specific absorption rate (SAR) and RF exposure limits included in 
United States and international standards.  Read the information 
in this booklet before operating your radio. 
P5500 Series 
Portable Radios 

2 
14221-1400-2010 
REV 
DATE 
DESCRIPTION 
- 
Sep/11 
Initial release 
CREDITS 
OpenSky is a registered trademark of Harris Corporation.  
RBRC and 1-800-8-BATTERY are registered trademarks of Rechargeable Battery Recycling 
Corporation. 
AMBE is a registered trademark and IMBE, AMBE+, and AMBE+2 are trademarks of Digital 
Voice Systems, Inc. 
All other product and brand names are trademarks, registered trademarks, or service marks of 
their respective holders. NOTICE 
The material contained herein is subject to U.S. export approval. No export or re-export is 
permitted without written approval from the U.S. Government. Rated: EAR99; in accordance with 
U.S. Dept. of Commerce regulations 15CFR774, Export Administration Regulations. 
Information and descriptions contained herein are the property of Harris Corporation. Such 
information and descriptions may not be copied or reproduced by any means, or disseminated or 
distributed without the express prior written permission of Harris Corporation, RF 
Communications Division, 221 Jefferson Ridge Parkway, Lynchburg, VA 24501. 
This product conforms to the European Union WEEE Directive 2002/96/EC.  Do not 
dispose of this product in a public landfill.  This product should be taken to a recycling 
center at the end of its life. 
Repairs to this equipment should be made only by an authorized service technician or facility 
designated by the supplier.  Changes or modifications not expressly approved by Harris 
Corporation could void the user’s authority to operate the equipment. 
The voice coding technology embodied in this product is protected by intellectual property rights 
including patent rights, copyrights, and trade secrets of Digital Voice Systems, Inc.  The user of 
this technology is explicitly prohibited from attempting to decompile, reverse engineer, or 
disassemble the Object Code, or in any other way convert the Object Code into human-readable 
form. 
This manual is published by Harris Corporation, without any warranty.  Improvements and changes to this 
manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs 
and/or equipment, may be made by Harris Corporation, at any time and without notice.  Such changes will be 
incorporated into new editions of this manual.  No part of this manual may be reproduced or transmitted in any 
form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, 
without the express written permission of Harris Corporation.
Copyright © 2011 Harris Corporation.  All rights reserved. 
NOTICE! 
This device is a RF transceiver intended for land mobile radio applications.  The device may have 
use restrictions, which require that the national authority be contacted for any system licensing 
requirements, frequency use, allowable power level, etc. 

14221-1400-2010 
3 
Insert Declaration of 
Conformity.  

4 
14221-1400-2010 
TABLE OF CONTENTS 
1. SAFETY SYMBOL CONVENTIONS ........................................... 
Page 
5 
2. SAFETY TRAINING INFORMATION ........................................ 6 
2.1 RF EXPOSURE GUIDELINES ..................................................... 6 
2.2 ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY ... 7 
2.3 REGULATORY APPROVALS ..................................................... 8 
3. OPERATING TIPS .......................................................................... 9 
3.1 EFFICIENT RADIO OPERATION ............................................... 9 
4. OPTIONS AND ACCESSORIES ................................................. 11 
5. BATTERY PACKS ........................................................................ 12 
5.1 CONDITIONING NIMH BATTERY PACKS ............................. 12 
5.2 CONDITIONING LI-ION OR LI-POLY BATTERY PACKS .... 12 
5.3 ADDITIONAL INFORMATION ................................................. 13 
5.4 BATTERY DISPOSAL ................................................................ 13 
6. TECHNICAL ASSISTANCE........................................................ 13 
7. WARRANTY.................................................................................. 13 
Harris Corporation, Public Safety and Professional Communications (PSPC) Business continually 
evaluates its technical publications for completeness, technical accuracy, and organization. You 
can assist in this process by submitting your comments and suggestions to the following: 
Harris Corporation 
PSPC Business or fax your comments to: 1-434-455-6851 
Technical Publications 
221 Jefferson Ridge Parkway or  e-mail us at: 
Lynchburg, VA 24501 PSPC_techpubs@harris.com 

14221-1400-2010 
5 
1. SAFETY SYMBOL CONVENTIONS 
The following conventions are used to alert the user to general safety 
precautions that must be observed during all phases of operation, service, and 
repair of this product.  Failure to comply with these precautions or with 
specific warnings elsewhere violates safety standards of design, manufacture, 
and intended use of the product.  Harris Corporation assumes no liability for 
the customer's failure to comply with these standards. 
WARNING
The WARNING symbol calls attention to a procedure, 
practice, or the like, which, if not correctly performed or 
adhered to, could result in personal injury.  Do not proceed 
beyond a WARNING symbol until the conditions identified 
are fully understood or met.  
CAUTION
The  CAUTION 
symbol calls attention to an operating 
procedure, practice, or the like, which, if not performed 
correctly or adhered to, could result in a risk of danger, damage 
to the equipment, or severely degrade the equipment 
performance. 
NOTE
The  NOTE 
symbol calls attention to supplemental 
information, which may improve system performance or 
clarify a process or procedure. 
The ESD symbol calls attention to procedures, practices, or the 
like, which could expose equipment to the effects of Electro-
Static Discharge. Proper precautions must be taken to prevent 
ESD when handling circuit modules. 

6 
14221-1400-2010 
2. SAFETY TRAINING INFORMATION 
WARNING
The Harris Corporation P5500 portable radio generates 
RF electromagnetic energy during transmit mode.  This 
radio is designed for and classified as “Occupational Use 
Only,” meaning it must be used only during the course of 
employment by individuals aware of the hazards and the 
ways t
o minimize such hazards.  This radio is NOT 
intended for use by the “General Population” in an 
uncontrolled environment. 
The  P5500 portable radio has been tested and complies with the FCC RF 
exposure limits for “Occupational Use Only.”  In addition, this radio complies 
with the following Standards and Guidelines with regard to RF energy and 
electromagnetic energy levels and evaluation of such levels for exposure to 
humans: 
• FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating 
Compliance with FCC Guidelines for Human Exposure to Radio 
Frequency Electromagnetic Fields. 
• American National Standards Institute (C95.1 – 1992), IEEE Standard for 
Safety Levels with Respect to Human Exposure to Radio Frequency 
Electromagnetic Fields, 3 kHz to 300 GHz. 
• American National Standards Institute (C95.3 –  1992), IEEE 
Recommended Practice for the Measurement of Potentially Hazardous 
Electromagnetic Fields – RF and Microwave. 
2.1 RF EXPOSURE GUIDELINES 
CAUTION
To ensure that exposure to RF electromagnetic energy is 
within the FCC 
allowable limits for occupational use, 
always adhere to the following guidelines: 
• DO NOT operate the radio without a proper antenna attached, as this may 
damage the radio and may also cause the FCC RF exposure limits to be 
exceeded.  A proper antenna is the antenna supplied with this radio by 
Harris or an antenna specifically authorized by Harris Corporation for use 
with this radio. 
• DO NOT transmit for more than 50% of total radio use time (“50% duty 
cycle”).  Transmitting more than 50% of the time can cause FCC RF 
exposure compliance requirements to be exceeded.  The radio is 
transmitting when the “TX” indicator appears in the display.  The radio 
will transmit by pressing the “PTT” (Push-To-Talk) button. 
• ALWAYS transmit using low power when possible.  In addition to 
conserving battery charge, low power can reduce RF exposure. 

14221-1400-2010 
7 
• ALWAYS use Harris authorized accessories (antennas, batteries, belt 
clips, speaker/mics, etc).  Use of unauthorized accessories may cause the 
FCC Occupational/Controlled Exposure RF compliance requirements to 
be exceeded. 
• As noted in Table  2-1, ALWAYS keep the device and its antenna AT 
LEAST 1.1 cm (0.43 inches) from the body and at least 2.5 cm (1.00 
inch) from the face when transmitting to ensure FCC RF exposure 
compliance requirements are not exceeded.  However, to provide the best 
sound quality to the recipients of your transmission, Harris Corporation 
recommends you hold the microphone at least 5 cm (2 inches) from your 
mouth, and slightly off to one side. 
Table 2-1: RF Exposure Compliance Testing Distances 
RADIO FREQUENCY 
TESTED DISTANCES 
(worst case scenario) 
Body Face 
800 MHz 1.1 cm 2.5 cm 
VHF (136 - 174 MHz) 1.1 cm 2.5 cm 
Table 2-2: Distance from Body for Different Carrying Options 
CARRYING CONFIGURATION TESTED DISTANCES 
(worst case from body) 
Belt Loop  3.0 cm 
Belt Clip  1.1 cm 
Leather Case with Belt Loop  4.0 cm 
Nylon Case with Belt Loop  4.4 cm 
Shoulder Strap with D-clip  1.2 cm 
Speaker-microphone with antenna  1.1 cm 
The information in this section provides the information needed to make the 
user aware of a RF exposure, and what to do to assure that this radio operates 
within the FCC RF exposure limits of this radio. 
2.2 ELECTROMAGNETIC 
INTERFERENCE/COMPATIBILITY 
During transmissions, Harris radios generate RF energy that can possibly 
cause interference with other devices or systems.  To avoid such interference, 
turn off the radios in areas where signs are posted to do so.  DO NOT operate 
the transmitter in areas that are sensitive to electromagnetic radiation such as 
hospitals, aircraft, and blasting sites. 

8 
14221-1400-2010 
2.3 REGULATORY APPROVALS 
2.3.1 
This device complies with Part 15 of the FCC Rules. Operation is subject to 
the following two conditions:  
Part 15 
1. This device may not cause harmful interference, and  
2. This device must accept any interference received, including interference 
that may cause undesired operation. 
2.3.2 
This device complies with Industry Canada license-exempt RSS standard(s). 
Operation is subject to the following two conditions: (1) this device may not 
cause interference, and (2) this device must accept any interference, including 
interference that may cause undesired operation of the device. 
Industry Canada 
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux 
appareils radio exempts de licence. L'exploitation est autorisée aux deux 
conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) 
l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, 
même si le brouillage est susceptible d'en compromettre le fonctionnement. 

14221-1400-2010 
9 
3. OPERATING TIPS 
Antenna location and condition are important when operating a portable radio. 
Operating the radio in low lying areas or terrain, under power lines or bridges, 
inside of a vehicle or in a metal framed building can severely reduce the range 
of the unit. Mountains can also reduce the range of the unit.  
In areas where transmission or reception is poor, some improvement may be 
obtained by ensuring the antenna is vertical. Moving a few yards in another 
direction or moving to a higher elevation may also improve communications. 
Vehicular operation can be aided with the use of an externally mounted 
antenna.  
Face receiving antenna in weak coverage. 
Battery condition is another important factor in the trouble free operation of a 
portable radio. Always properly charge the batteries.  
3.1 EFFICIENT RADIO OPERATION 
Keep the antenna in a vertical position when receiving or transmitting a 
message.  
WARNING
Do NOT hold onto the antenna when the radio is powered 
on. 
3.1.1 
WARNING
Antenna Care and Replacement 
Always keep the antenna at least 0.43 inches (1.1 cm) away 
from the body and 1.0 inch (2.5 cm) from the face when 
transmitting to ensure FCC RF exposure compliance 
requirements are not exceeded. 
WARNING
Do not use the portable radio with a damaged or missing 
antenna. A minor burn may result if skin comes into 
contact with a da
maged antenna. Replace a damaged 
antenna immediately. Operating a portable radio with the 
antenna missing could cause personal injury, damage the 
radio, and may violate FCC regulations. 
WARNING
Use only supplied or approved antennas. Use of 
unauthorized  antennas, modifications, 
or attachments 
could cause damage to the radio unit and may violate FCC 
regulations. 

10 
14221-1400-2010 
3.1.2 
CAUTION
Electronic Devices 
RF energy from portable radios may affect some electronic 
equipment. Most modern electronic equipment in cars, 
hospitals, homes, etc., are shielded from RF energy. However, 
in areas in which you are instructed to turn off two-way radio 
equipment, always observe the rules. If in doubt, turn it off! 
3.1.3 
WARNING
Aircraft 
Always turn off a portable radio before boarding any 
aircraft! 
• Use it on the ground only with crew permission. 
• 
3.1.4 
DO NOT use while in-flight!! 
WARNING
Electric Blasting Caps  
To prevent accidental detonation of electric blasting caps, 
DO NOT use two-way radios within 1000 feet of blasting 
operations. Always obey the "Turn Off Two-Way Radios" 
signs posted where electric blasting caps are being used. 
(OSHA Standard: 1926.900) 
3.1.5 
WARNING
Potentially Explosive Atmospheres 
Areas with potentially explosive atmospheres are often, 
but not always, clearly marked. These may be fuelling 
areas, such as gas stations, fuel or chemical transfer or 
storage facilities, and areas where the air contains 
chemicals or particles, such as grain, dust, or metal 
powders. 
Sparks in such areas could cause an explosion or fire 
resulting in bodily injury or even death. 
Turn OFF two-
way radios when in any area with a 
potentially explosive atmosphere. It is rare, but not 
impossible that a radio or its accessories could generate 
sparks. 

14221-1400-2010 
11 
4. OPTIONS AND ACCESSORIES 
A list of Options and Accessories approved for use with the P5500 portable 
radio can be found in the Operator’s Manual 14221-1100-2010, available 
online at www.pspc.harris.co .  Also reference the maintenance manual or 
Harris Corporation’s Products and Services Catalog for all available options 
and accessories, including those items that do not adversely affect the RF 
energy exposure. 
m
WARNING
Always 
use Harris authorized accessories (antennas, 
batteries, belt clips, speaker/mics, etc). Use of unauthorized 
accessories may cause the FCC Occupational/Controlled 
Exposure RF compliance requirements to be exceeded. 
CAUTION
Always 
use the correct options and accessories (battery, 
antenna, speaker/mic, etc.) for the 
radio. Immersion rated 
options must be used with an immersion rated radio. 
Intrinsically safe options must be used with intrinsically safe 
radios. 

12 
14221-1400-2010 
5. BATTERY PACKS 
The P5500 series portable radios use rechargeable, recyclable Nickel Metal 
Hydride (NiMH), Lithium-Ion (Li-Ion), or Lithium Polymer (Li-Poly) battery 
packs. Please follow the directions below to maximize the useful life of each 
type of battery pack. 
WARNING
Do not disassemble or modify Lithium battery packs.  The 
Lithium battery packs are equipped with built-in safety 
and protection features.  Should these features be disabled 
or tampered with in any way, the battery pack can leak 
electrolyte, overheat, emit smoke, burst, and/or ignite. 
WARNING
If the battery pack is ruptured or is leaking electrolyte 
that results in skin or eye contact with the electrolyte, 
immediately flush the affected area with water. If the 
battery electrolyte gets in the eyes, flush with water for 15 
minutes and consult a physician immediately. 
5.1 CONDITIONING NIMH BATTERY PACKS 
Condition a new NiMH battery pack before putting into use. This also applies 
to rechargeable NiMH battery packs that have been stored for long periods 
(weeks, months, or longer). Conditioning requires fully charging and fully 
discharging the battery pack three (3) times using the tri-chemistry charger.  
The first time the battery pack is put into the charger, this unit will condition 
Nickel-based battery packs by automatically charging and discharging 
(cycling) the battery.  Refer to the appropriate charger manual for details. 
CAUTION
Failure to properly condition NiMH battery packs before initial 
use will result in shortened performance by the battery. 
5.2 CONDITIONING LI-ION OR LI-POLY BATTERY 
PACKS 
Lithium-Ion and Lithium Polymer battery packs do not suffer from memory 
effect and do not require conditioning.   
CAUTION
Always use Harris authorized chargers and conditioners. Use 
of unauthorized chargers and conditioners may void the 
warranty. 

14221-1400-2010 
13 
5.3 ADDITIONAL INFORMATION 
For more information regarding the proper care of portable radio battery packs 
or establishing a battery maintenance program, refer to ECR-7367 which may 
be ordered by calling toll free 1-800-368-3277, then select option 7. 
5.4 BATTERY DISPOSAL 
CAUTION
In no instance should a battery pack be incinerated.  Disposing 
of a battery pack by burning will cause an explosion. 
RECHARGEABLE BATTERY PACK DISPOSAL – The 
product you have purchased contains a rechargeable battery 
pack.  The battery pack is recyclable.  At the end of its useful 
life, under various state and local laws, it may be illegal to 
dispose of this battery pack into the municipal waste stream.  
Check with your local solid waste officials for details in your 
area for recycling options or proper disposal.  Canadian and 
U.S. users may call Toll Free 1-800-8-BATTERY® for 
information and/or procedures for returning rechargeable 
batteries in your locality. 
6. TECHNICAL ASSISTANCE 
The Technical Assistance Center's (TAC’s) resources are available to help 
with overall system operation, maintenance, upgrades and product support.  
TAC is your point of contact when answers are needed to technical questions. 
Product specialists, with detailed knowledge of product operation, 
maintenance, and repair, provide technical support via a toll-free (in North 
America) telephone number.  Support is also available through mail, fax and 
e-mail. For more information about technical assistance services, contact your 
sales representative, or call the Technical Assistance Center directly at:  
North America:  1-800-528-7711 
International:   1-434-385-2400 
Fax:  1-434-455-6712 
E-mail:     
7. WARRANTY 
PSPC_tac@harris.com 
Please register this product within 10 days of purchase.  Registration validates 
the warranty coverage, and enables Harris to contact you in case of any safety 
notifications issued for this product.  
Registration can be made on-line at www.pspc.harris.com/CustomerService. 

14 
14221-1400-2010 
RECHARGEABLE BATTERY WARRANTY 
A.  Harris Corporation, a Delaware Corporation, through its RF 
Communications Division (hereinafter "Seller") warrants to the original 
purchaser for use (hereinafter "Buyer") that nickel-cadmium, nickel-
metal hydride, lithium-ion, and lithium-polymer batteries supplied by 
Seller shall be free from defects in material and workmanship, and 
shall conform to its published specifications for a period of twelve (12) 
months from the date of purchase. 
B.  For purposes of this warranty, batteries shall be deemed defective if (1) 
the battery capacity is less than 80% rated capacity, or (2) the battery 
develops leakage. 
C. If any battery fails to meet the foregoing warranty, Seller shall correct 
the failure by issuing a replacement battery upon receipt of the 
defective battery at an Authorized Service Center (ASC) or Seller 
factory (for OpenSky® Equipment only). 
D. Replacement batteries shall be warranted only for the remaining 
unexpired warranty period of the original battery. This warranty 
becomes void if: 
1. The battery has been subjected to any kind of misuse, detrimental 
exposure, or has been involved in an accident. 
2. The battery is used in equipment or service other than the radio 
equipment for which it is specified. 
E.  The preceding paragraphs set forth the exclusive remedies for claims 
based upon defects in or non-conformity of any battery, whether the 
claim is in contract, warranty, tort (including negligence), strict liability 
or otherwise, and however instituted. Upon the expiration of the 
warranty period, all such liability shall terminate. The foregoing 
warranties are exclusive and in lieu of all other warranties, whether 
oral, written, expressed, implied or statutory. NO IMPLIED OR 
STATUTORY WARRANTIES OF MERCHANTABILITY OR FITNESS 
FOR PARTICULAR PURPOSE SHALL APPLY. IN NO EVENT SHALL 
THE COMPANY BE LIABLE FOR ANY INCIDENTAL, 
CONSEQUENTIAL, SPECIA
L, INDIRECT OR EXEMPLARY 
DAMAGES. 
This warranty applies only within the United States. 
To obtain the name and address of an Authorized Service Center (ASC), 
ask your salesperson, or call one of the factory number(s) printed at the 
bottom of this page. 
Harris Corporation Harris Corporation
RF Communications Division RF Communications Division
221 Jefferson Ridge Parkway 1680 University Avenue
Lynchburg, VA 24501 Rochester, NY 14610
1-800-528-7711  1-585-244-5830
ECR-7048D

14221-1400-2010 
15 
WARRANTY 
A. Harris Corporation, a Delaware Corporation, through its RF Communications Division 
(hereinafter "Seller") warrants to the original purchaser for use (hereinafter "Buyer") 
that Equipment manufactured by or for the Seller shall be free from defects in material 
and workmanship, and shall conform to its published specifications. With respect to all 
non-
Seller Equipment, Seller gives no warranty, and only the warranty, if any, given by 
the manufacturer shall apply.  Rechargeable batteries are excluded from this warranty 
but are warranted under a separate Rechargeable Battery Warranty (ECR-7048). 
B. 
Seller’s obligations set forth in Paragraph C below shall apply only to failures to meet 
the above warranties occurring within the following periods of time from date of sale to 
the Buyer and are conditioned on Buyer’s giving written notice to Seller within thirty 
(30) days of such occurrence: 
1. for fuses and non-rechargeable batteries, operable on arrival only. 
3. for parts and accessories (except as noted in B.1), ninety (90) days. 
4. for P7300, P7200, P7100IP
, P5400, P5300, P5200, P5100, P3300, M7300, 
M7200 (including V-TAC), M7100IP
, M5300 and M3300 radios, two (2) years, 
effective 10/01/2007. 
5. for Unity® XG-100P, three (3) years. 
6. for all other equipment of Seller’s manufacture, one (1) year. 
C. 
If any Equipment fails to meet the foregoing warranties, Seller shall correct the failure 
at its option (i) by repairing any defective or damaged part or parts thereof, (ii) by 
making available 
at Seller’s factory any necessary repaired or replacement parts, or 
(iii) by replacing the failed Equipment with equivalent new or refurbished Equipment. 
Any repaired or replacement part furnished hereunder shall be warranted for the 
remainder of the warr
anty period of the Equipment in which it is installed. Where such 
failure cannot be corrected by Seller’s reasonable efforts, the parties will negotiate an 
equitable adjustment in price. Labor to perform warranty service will be provided at no 
charge durin
g the warranty period only for the Equipment covered under Paragraph 
B.3 and B.4. To be eligible for no-
charge labor, service must be performed at Seller’s 
factory, by an Authorized Service Center (ASC) or other Servicer approved for these 
purposes either 
at its place of business during normal business hours, for mobile or 
personal equipment, or at the Buyer’s location, for fixed location equipment. Service on 
fixed location equipment more than thirty (30) miles from the Service Center or other 
approved Servicer’s place of business will include a charge for transportation. 
D. 
Seller’s obligations under Paragraph C shall not apply to any Equipment, or part 
thereof, which (i) has been modified or otherwise altered other than pursuant to 
Seller’s written instru
ctions or written approval or, (ii) is normally consumed in 
operation or, (iii) has a normal life inherently shorter than the warranty periods 
specified in Paragraph B, or (iv) is not properly stored, installed, used, maintained or 
repaired, or, (v) has be
en subjected to any other kind of misuse or detrimental 
exposure, or has been involved in an accident. 
E. 
The preceding paragraphs set forth the exclusive remedies for claims based upon 
defects in or nonconformity of the Equipment, whether the claim is in contract, 
warranty, tort (including negligence), strict liability or otherwise, and however instituted. 
Upon the expiration of the warranty period, all such liability shall terminate. The 
foregoing warranties are exclusive and in lieu of all other warranti
es, whether oral, 
written, expressed, implied or statutory. NO IMPLIED OR STATUTORY WARRANTIES 
OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL 
APPLY. IN NO EVENT SHALL THE SELLER BE LIABLE FOR ANY INCIDENTAL, 
CONSEQUENTIAL, SPECIAL, INDIRECT OR EXEMPLARY DAMAGES. 
This warranty applies only within the United States. 
Harris Corporation Harris Corporation 
RF Communications Division RF Communications Division 
221 Jefferson Ridge Parkway 1680 University Avenue 
Lynchburg, VA 24501 Rochester, NY 14610 
1-800-528-7711  1-585-244-5830 
ECR-7047L 

Public Safety and Professional Communications 
221 Jefferson Ridge Parkway  |  Lynchburg, VA USA 24501  
www.pspc.harris.com   | 1-800-528-7711 

