Northrop Grumman Information Technology sector DMS WLERVA Vehicle Extended Range Amplified WLAN System User Manual CERTIFICATE OF COMPLIANCE

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Rhein Tech Laboratories
360 Herndon Parkway
Suite 1400
Herndon, VA 20170
http://www.rheintech.com
APPENDIX L:
Report number:
FCC:
Industry Canada:
FCC ID:
M/N:
2002050
Part 15.247
RSS-139
P6G-WLERVA
NGIT Vehicle Extended Range
Amplified WLAN System
MANUAL
Please see the following pages.
Page 55 of 77
Extended Range WLAN
System Guide
Northrop Grumman Information Technology
Extended Range Amplified Wireless LAN
System
(For Cisco Aironet 350 Series Wireless Product)
System Description, Configuration and
Installation Guide
July 18, 2002
Northrop Grumman Information Technology
Defense Mission Systems
Wireless LAN Center Of Excellence
4065 Hancock Street, Suite 200
San Diego, California 92110-5151
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Extended Range WLAN
System Guide
Table of Contents
INTRODUCTION ............................................................................................................................................1
1.1 ABOUT THIS GUIDE ...........................................................................................................................................1
1.2 WHO SHOULD USE THIS GUIDE .........................................................................................................................1
1.3 NOTES AND WARNINGS TO THE USER AND INSTALLER .....................................................................................1
1.3.1
System Applicability ................................................................................................................................1
1.3.2
Interference and Equipment Limits..........................................................................................................1
1.3.3
Cautions and Warnings ............................................................................................................................2
SYSTEM DESCRIPTION................................................................................................................................3
2.1 EXTENDED RANGE WLAN SYSTEM INFRASTRUCTURE .....................................................................................3
2.2 GENERAL DESCRIPTION .....................................................................................................................................7
2.3 SYSTEM FEATURES ............................................................................................................................................7
2.4 PLATFORM MODELS ..........................................................................................................................................8
2.5 EXTENDED RANGE WLAN SYSTEM SPECIFICATIONS .......................................................................................8
2.5.1
3dBi Vehicle Extended Range WLAN System Specifications ................................................................8
2.5.2
5 dBi Vehicle Extended Range WLAN System Specifications ...............................................................9
2.5.3
6 dBi Fixed Site Extended Range WLAN System Specifications .........................................................10
2.5.4
9 dBi Fixed Site Extended Range WLAN System Specifications .........................................................11
2.5.5
Wireless LAN External Amplifier .........................................................................................................12
2.5.6
Additional Wireless LAN System Components.....................................................................................14
CONFIGURING THE EXTENDED RANGE WLAN SYSTEM..................................................................14
3.1
3.2
3.3
3.4
SETTING THE CISCO AIRONET CHANNEL SETTINGS .........................................................................................14
CONFIGURING THE CISCO AIRONET RADIO UNIT ANTENNA CONNECTION PORT ............................................15
CONFIGURING THE CISCO AIRONET RADIO UNIT OUTPUT POWER SETTING ...................................................15
OTHER WIRELESS LAN SYSTEM CONFIGURATIONS ........................................................................................16
INSTALLATION ...........................................................................................................................................16
4.1 INSTALLATION NOTES .....................................................................................................................................16
4.1.1
Primary Required Tools .........................................................................................................................16
4.1.2
Other Required Equipment.....................................................................................................................16
4.1.3
Helpful Tools and Equipment ................................................................................................................16
4.1.4
Installation Site Survey ..........................................................................................................................16
4.1.5
Installation Safety and Equipment Warnings .........................................................................................18
4.1.6
Cisco Aironet Programming and Settings ..............................................................................................18
4.1.7
Antenna Installation ...............................................................................................................................18
4.2 INSTALLING THE FIXED SITE EXTENDED RANGE (AMPLIFIED) WLAN SYSTEM .............................................19
4.2.1
Installing and Cabling the Antenna and Amplifier Unit.........................................................................19
4.2.2
Installing and Connecting the Cisco Aironet 350 Series Radio Device .................................................20
4.3 INSTALLING THE VEHICLE EXTENDED RANGE (AMPLIFIED) WLAN SYSTEM .................................................21
4.3.1
Installing and Cabling the Antenna and Amplifier Unit.........................................................................21
4.3.2
Installing and Connecting the Cisco Radio Device ................................................................................22
POST INSTALLATION TESTING ...............................................................................................................25
5.1 BASIC SYSTEM OPERATIONAL CHECKS ...........................................................................................................25
5.2 WLAN SYSTEM DIAGNOSTICS ........................................................................................................................25
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System Guide
1 Introduction
1.1
About this Guide
This guide provides for a system technical description and generalized overview of the Northrop
Grumman IT Extended Range Amplified WLAN System engineered for use with the Cisco Aironet 350
Series Wireless product. It also sets forth the mandatory technical parameters, installation specifics,
warnings, and configuration steps necessary for professional wireless system installation. Adherence to
the installation parameters set forth in this guide is essential for compliance with current FCC rules,
regulations, and Northrop Grumman FCC ID Grant P6GERWLVA and P6GERWLFA. It is not the
intention of this guide to describe all the necessary installation facets for a complete wireless LAN and
antenna system installation. Installation details such as the mounting the wireless LAN radio hardware,
network cabling, antenna cabling, antenna mast/tower installation, and/or antenna grounding systems
should be referred to a professional WLAN system installer. This guide is specific only to the use of and
equipment configuration parameters necessary for properly installing the associated Northrop Grumman
IT amplified WLAN system within the overall wireless LAN system. This installation guide is over
packed with each Northrop Grumman IT Amplified WLAN System and it is intended to supplement the
Cisco Aironet product and other equipment manufacturer User and Installation Guides included within
the WLAN system for the individual system components. This Installation guide is intended for use by
the professional wireless LAN system installer.
1.2
Who Should Use this Guide
Installation of the Northrop Grumman Extended Range Amplified WLAN System should be
accomplished only by a qualified wireless LAN system installer who is:
• Knowledgeable with the use, installation and configuration procedures for the Cisco Aironet 350
Series Wireless product line and associated networking components.
• Knowledgeable with each system component’s equipment User’s and Installation Guide.
• Knowledgeable with the installation and configuration procedures for the site’s network infrastructure
system and wiring.
• Knowledgeable with the installation procedures, safety, and code requirements for the site’s antenna,
antenna mast, antenna cabling, and lightning protection installation. Northrop Grumman IT highly
recommends that the antenna installation be performed by a qualified antenna installation
professional.
1.3
1.3.1
Notes and Warnings to the User and Installer
System Applicability
The Northrop Grumman IT Extended Range Amplified WLAN System is offered for professional
installation to support enhanced wireless LAN mobility for Public Safety, Department of Defense (DOD),
Industrial, and Home Land Defense agencies. The Northrop Grumman IT Extended Range (Amplified)
System is not applicable for sale, installation, or use to the general public for private and/or other public
use.
1.3.2
Interference and Equipment Limits
This equipment is to be operated in compliance with the limits of Part 15 of the Federal Communications
Commission (FCC) Rules. As such, operation of this equipment may not cause harmful interference, and
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Extended Range WLAN
System Guide
this equipment must accept any interference received, including interference that may cause undesired
performance.
FCC Part 15 rules and specifications are designed to limit harmful interference in a residential and
commercial installation. This equipment generates, uses, and can radiate radio frequency energy. This
equipment may cause harmful interference to radio communications if not installed and operated
according to the instructions provided in this manual. However, proper installation and operation is no
guarantee against interference. If interference to radio or television reception is noticed, turn this
equipment off and on to determine if this equipment is causing the interference. If so, the installer/user is
encouraged to attempt to correct the problem using any of the following measures:
•
•
•
•
•
Change antenna position and/or orientation.
Provide more separation between the equipment and receiver.
Insure the equipment is not connected to the same circuit (power) as the receiver.
Reduce the radio transmitter power output level
Consult with your professional wireless system installer for interference mitigation.
NOTE: Any changes or modifications of the equipment not expressly approved by Northrop Grumman IT
could void the WLAN system grant of operation and void the authority of the user to operate the
equipment.
1.3.3
Cautions and Warnings
CAUTION: The radiated output power of this product meets with FCC radio frequency (RF)
exposure limits. However, this equipment should be used in such a manner as to minimize the potential
for human exposure. Table 1-1 below addresses the Maximum Permissible Exposure (MPE) distances
that must be maintained for each extended range WLAN system model and antenna type.
System
Platform &
Antenna Type
Vehicle
OmniDirectional
Vehicle
OmniDirectional
Fixed Site
OmniDirectional
Fixed Site
OmniDirectional
Specified
Antenna
Gain (dBi)
Max. Cisco
Aironet Radio
Output Power
(dBm)
Max. Amplifier
Output Power
(dBm)
Max. FCC
EIRP 4 Watts
(+36dBm)
Maximum
Permissible
Exposure
(MPE) Distance
cm (inches)
2.5dBi
100mW
(+20dBm)
1 Watt
(+30dBm)
<4 Watts EIRP
(33dBm)
20cm
(7.9 inches)
5dBi
100mW
(+20dBm)
1 Watt
(+30dBm)
<4 Watts EIRP
(35dBm)
20cm
(7.9 inches)
6dBi
100mW
(+20dBm)
500mWatt
(+27dBm)
<4 Watts EIRP
(+33dBm)
20cm
(7.9 inches)
9dBi
100mW
(+20dBm)
500mWatt
(+27dBm)
4 Watts EIRP
(+36dBm)
20cm
(7.9 inches)
Table 1-1 Maximum Permissible Exposure Distance For Model and Antenna Type
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Extended Range WLAN
System Guide
WARNING: When using the Northrop Grumman Extended Range Amplified WLAN
System in the United States (or where the FCC rules apply), it is the responsibility of the
professional installer to ensure that only the configurations shown in Table 1 above and else
where described in this manual are used. The use of any other configuration other than
those listed herein is expressly forbidden in accordance with FCC rules CFR47 part 15.204.
Northrop Grumman IT is not responsible for any interference caused by unauthorized modification or
configuration programming of this device or the substitution or attachment of antennas and equipment
other than that specified by Northrop Grumman IT.
2 System Description
2.1
Extended Range WLAN System Infrastructure
The Northrop Grumman IT extended range WLAN (notional) infrastructure consists principally of
installing wireless LAN Access Points (APs) with an extended range (amplified) system at designated
agency or city owned buildings and sites that have traditional wired network access (T-1, Fiber, or other
medium) connectivity into the agency’s overall Wide Area Network (WAN) infrastructure. In conjunction
with this fixed site “wireless-to-wired” infrastructure, designated agency vehicles will be additionally
equipped with an extended range (amplified) WLAN vehicle system that will allow the vehicle’s installed
Mobile Data Computer (MDC) to obtain a high-speed wireless data connection to any fixed site Access
Point within the vehicle’s extended LOS range. This wireless LAN connection between the vehicle and
the fixed site AP will provide for a significantly enhanced wireless LAN system capability for
communicating back to the agencies backbone WAN infrastructure. The extended range WLAN system
will essentially extend the WAN fixed site infrastructure currently in placed within a designated area to be
extended wirelessly to any mobile MDC vehicles operating within the wireless cell range (zone) of that
designated fixed site.
Figure 1 on the next page illustrates a notional Extended Range (Amplified) WLAN infrastructure. It is
based solely on a baseline concept of offering an extended range wireless LAN connectivity between
mobile data computer vehicles operating within extended LOS range to any one of the identified WLAN
cell sites or fixed (AP) relay stations for seamless wireless connectivity back into the agency’s supporting
WAN infrastructure.
Additionally, Figures 2 and 3 following are provided to describe the Extended Range WLAN system’s
individualized configuration (block) diagrams for both the Vehicle and Fixed Site WLAN platforms.
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Extended Range WLAN Antenna Guide
WLAN to
Mobile Units
WLAN to
Mobile Units
Mobile Unit
AP
Cat 5 to
WAN
WLAN Cell Site
Station 27
WLAN Cell Site
Station 1
WLAN to
Mobile Units
AP
Cat 5 to
WAN
MDC
WLAN to
Mobile Units
AP
Wired LAN
Connectivity
to Remote Sites
Cat 5 to
WAN
WLAN to
Mobile Units
WLAN to
Mobile Units
WLAN Cell Site
Station 2
T-1 or Fiber
AP
AP
Cat 5 to
WAN
AP
Station 28
WLAN to
Mobile Units
County Office Center
AP
WLAN to
Mobile Units
County
Hospital
Cat 5 to
WAN
AP
WLAN to
Mobile Units
WLAN Cell Site
Station 3
WLAN to
Mobile Units
MDC
AP
AP
Mobile Unit
Police or Fire
Headquarters
WLAN Cell Site
Station 30
Figure 1. Notional Extended Range WLAN System Architecture
Version 07/18/02
WLAN Cell Site
Station 29
Extended Range WLAN Antenna Guide
L M C 3 5 0 P C C a rd
V e h ic le C o n f ig u r a t io n
M o b ile D a ta
C o m p u te r (M D C )
T e r m in a l
LM C
350
C is c o A ir o n e t 3 5 0 S e rie s
L M C 3 5 0 P C C a rd
P o w e r O u tp u t 1 0 0 m W m a x
P C C a r d In s e r te d in to M D C P C M C IA S lo t
TToo IInnttrraa--VVeehhi iccl lee AAuuxxi il li iaarryy DDeevvi icceess
(P rin te r, V e h ic le A P , F in g e r p r in t S c a n n e r , e tc .)
R a d io -to -D C In je c t o r
R F C a b le (fe e d lin e )
( M M C X P l u g - t o - N -M a l e )
OR
( R P T N C - M a l e - t o - N -M a l e )
1 2 ” R G -1 7 4 T yp e
(m in im u m )
D C -In je c to r - to - P o w e r A m p lifie r
R F C a b le (fe e d lin e ) A s s e m b l y
( N - M a l e - t o - N -M a l e ) 1 2 ” R G - 1 7 4
T y p e (m in im u m ); o r
D i r e c t C o u p l e d w it h N -M a l e to - N -M a le A d a p t e r
Cat 5
E th e r n e t
c a b lin g
V e h ic le
Hub
DC
In
In je
je cc ttoo rr
Cat 5
E th e rn e t
D C -I n j e c t o r
M o d u le
M aa iinn PP oo w
w ee rr
Am
m pp lliiffiiee rr U
U nn iitt
T e le tr o n ic s
M a in A m p lifie r U n it
P o w e r O u tp u t
1 W a tt
C is c o A ir o n e t 3 5 0 S e rie s
W o rk G ro u p B r id g e U n it
1 0 0 m W (m a x )
E q u ip m e n t M o u n te d /L o c a te d in V e h ic le T ru n k o r O th e r A v a ila b le V e h ic le C o m p a r tm e n t S t o ra g e S p a c e
Figure 2. Vehicle Extended Range WLAN System (Block) Diagram
Version 07/18/02
2 .5 d B i o r 5 d B i
V e h ic le o r T r u n k
M o u n te d
O m n i d ire c tio n a l
A n te n n a
A n te n n a -to -P A R F C a b le
1 2 ” R G - 1 9 5 T y p e ( m in im u m )
C is c o A ir o n e t R a d io
V e h ic le C o n f ig u r a tio n s :
L M C -3 5 0 P C C a r d R a d i o
or
W o rk G ro u p B r id g e R a d io
Extended Range WLAN Antenna Guide
6 dBi or
9 dBi
Omni-directional
Antenna
Fixed Site
Infrastructure
Network
Hub/Switch/ Router
DC Injector-to-Power Amplifier
(Feed line) RF Cable/Adapter
(N-Male-to-N-Male)
direct connect adapter
(minimum)
Radio-to DC Injector
(Feed line) RF Cable
(RPTNC-Male to N-Male)
12” RG-174 Type (minimum)
Cat 5 Ethernet
Cabling
(length as required)
Lightning
Arrestor
Antenna-to-Power Amplifier
RF Cable
(N-Male-to-N-Male)
24” RG-142 Type (minimum)
Main Power
Amplifier Unit
DC
Injector
Teletronics DC-Injector
Module
Cisco Aironet 350 Series
(Co-located near Radio Unit)
Access Point or Bridge Unit
Power Output
100mW max @ 6 dBi Antenna
100mW max @ 9 dBi Antenna
Figure 3. Fixed Site (AP) Extended Range WLAN System Block Diagram
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Teletronics Main Amplifier Unit
(Antenna Mast Mounted)
Power Output
500mW max @ 6 dBi Antenna
500mW max @ 9 dBi Antenna
Extended Range WLAN Antenna Guide
2.2
General Description
The Northrop Grumman IT Extended Range Amplified Wireless LAN System is designed to be used
strictly with the systems included Cisco Aironet 350 Series Wireless product for offering Direct Sequence
Spread Spectrum (DSSS) wireless transceiver operation at the 11 Mbps data rate. It fully supports
wireless system connectivity and performance compatibility as described by the IEEE 802.11b
specification. This product allows for a high-performance extended range system capability to be
employed within a mobile vehicle unit or when used with an Access Point/Bridge unit at a fixed site
station. Together, the mobile and fixed site WLAN amplified systems provide for a significantly
improved operating range of the wireless network infrastructure.
The amplified WLAN system contains and is authorized for use only with Cisco Systems Aironet 350
Series Wireless product line that incorporates the Cisco Aironet LMC-350 radio module. These products
currently include the following Cisco Aironet 350 Series* products:
•
•
•
•
LMC-350 PC Card with external MMCX antenna connection (AIR-LMC-352);
Work Group Bridge unit, (AIR-WGB352R);
Access Point unit (AIR-AP352E2R-A-K9)
Multifunction Bridge unit (AIR-BR350-A-K9)
* The above listed Cisco Aironet 350 Series products when used separately from the Northrop Grumman
IT Extended Range Amplified System are covered for FCC Grant of Authorization and compliance under
the manufacturer’s - Cisco Systems, Inc. FCC ID: LDK102040.
2.3
System Features
The Northrop Grumman IT Extended Range Amplified Wireless LAN System offers the following stateof-the-art features and capabilities:
•
•
•
•
•
•
•
•
•
Industry Leading Cisco Aironet 350 Series Wireless Radio Unit* - LMC-350 PC Card; Work Group
Bridge; Access Point; or Bridge unit (*per the system model radio features ordered)
IEEE 802.11b Wireless LAN 2.4 GHz Radio System Compatibility
7 available channels in US/Canada – (Standard 802.11b US/Canada channels 1, 2, 10, and 11 are
FCC prohibited from use with an amplified system operating above 100mW)
Bi-Directional WLAN Linear Amplification with Built-in Ultra Low Noise Pre-amplifier for
providing reliable, long range WLAN radio link operation.
Auto-ranging Amplifier Input Drive Level feature for compensating for feed line losses and yielding
maximized fixed RF output power to the Antenna
Low Loss DC Power Injector to allow voltage feed via the antenna coaxial cable; therefore allowing
the weatherproof main amplifier unit to be remote mounted near the antenna for minimized PA to
Antenna cable loss in fixed site installations
Low and Moderate Gain Omni directional Vehicle Mount and Fixed Site Antennas for effective
mobile-to-fixed site pattern coverage and maximized signal quality (Antenna type and gain is
configuration kit specific)
Variable length Radio-to-DC Injector and Power Amplifier feed line cabling for flexible and easy
antenna system installations
Customized Power Amplifier-to-Antenna Cable for low loss and installation unique lengths
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Extended Range WLAN Antenna Guide
•
Limited one year Warranty
2.4
Platform Models
The Northrop Grumman IT Extended Range Amplified Wireless LAN System is available in two
platform models – vehicle and fixed site. Each platform model is further available in two different
Antenna gain configurations for best meeting a system installation’s particular coverage concerns.
The below listed Northrop Grumman IT Extended Range Amplified Wireless LAN System
configurations are available for use with the Cisco Aironet 350 Series Wireless products:
•
Extended Range Vehicle Kits:
•
Extended Range Fixed Site Kits:
2.5
3dBi Vehicle Extended Range WLAN System
5dBi Vehicle Extended Range WLAN System
6dBi Fixed Site Extended Range WLAN System
9dBi Fixed Site Extended Range WLAN System
Extended Range WLAN System Specifications
The following subsections will describe each of the systems components, specifications, and purpose.
Strict attention must be made to each system’s authorized Cisco radio, external power amplifier output
power, and antenna gain.
2.5.1
3dBi Vehicle Extended Range WLAN System Specifications
This system is for use with a vehicle installed Cisco Aironet 350 Series Wireless Product. The specific
Cisco Aironet 350 Series product to be included with the extended range system will be custom ordered
by product type and specific wireless system functionality required to support the platform installation.
The Cisco Aironet component is capable of operating within the amplified system at any one of the
authorized Cisco output power-to-external Power Amplifier unit settings designated in Table 2-1 below.
However, it is recommended that the Cisco Aironet component be normally operated at the 20 – 50 mW
power setting based upon the radio to amplifier feed cable length. The system is capable of operating with
as little as 1mW input power coming from the Cisco Aironet radio, however, the power amplifier output
power will be less than its designed 1-Watt output power.
Authorized Power
level for 3dBi Gain
Vehicle Antenna
Cisco Radio
Power set @
1mW
Cisco Radio
Power set @
5mW
Cisco Radio
Power set @
20mW
Cisco Radio
Power set @
50mW
Cisco Radio
Power set @
100mW
External Power
Amplifier Output
1 Watt
No
Yes
Yes
Yes
Yes
Table 2-1 Authorized Cisco Radio and Power Amplifier Output Power Settings
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Extended Range WLAN Antenna Guide
The system will include an external (outdoor model) Teletronics SmartAmp 2.4 GHz (in-line AGC)
Power Amplifier unit that provides for a fixed 1-Watt (+30dbm) output power capability over the
complete range of Cisco radio component output (amplifier input) power settings identified in Table 2-1
above. The wireless system installer should normally configure the Cisco Aironet radio to supply between
a 20 – 50mW input power to the main amplifier based upon the cable feed-line losses between the Cisco
Aironet radio and the final positioning of the SmartAmp. The DC-Injector unit included with the
amplifier unit offers the ability to remotely mount the power amplifier nearer to the antenna’s physical
location while affording DC power coupling via the antenna coaxial feed cable for the main amplifier unit
operation.
The system will include one of two (orderable) Radio-to-DC-Injector unit connection assemblies:
•
•
A Radio-to-DC-Injector RF Cable Assembly (RP-TNC Female-to-N-Male) RG-174 (minimum cable
type) of a designated (ordered) length (12” minimum) for use in connecting the DC-Injector
module to the Cisco Aironet radio for remote mounting the main amplifier unit within a vehicle
compartment space; or
A Radio-to-DC-Injector RF Pigtail Cable Assembly (MMCX-to-N-Male) RG-174 (minimum cable
type) of a designated (ordered) length (12” minimum) for use in connecting the Mobile Computer
Terminal outfitted with a PCMCIA Cisco Aironet Wireless (LMC-352) PC Card radio MMCX
external antenna connection port to the N-type connection port of the DC-Injector module unit.
The system includes a DC-Injector to Power Amplifier RF Cable assembly; RG-174 cable type
(minimum cable type) customized at order for install cable length, with N-type Male connectors at each
end for use in connecting the (near the radio unit) DC-Injector unit to the remote mounted Power
Amplifier; the built-in input power auto-ranging power feature of the amplifier allows for variable vehicle
type cable lengths, routing and installation while compensating for feed line loss and maintaining
programmed output power to the antenna.
The system also includes a Mobile Mark Inc. 2.5 dBi Vertical Polarized, Omni-directional, Vehicle
Mount Antenna with a 12” (minimum) RG-195 cable assembly and N-Type Male connector for
connecting to the main Power Amplifier unit; vehicle antenna mounting hardware included; and specific
vehicle install antenna cable assembly lengths can be customized at order/install.
2.5.2
5 dBi Vehicle Extended Range WLAN System Specifications
This WLAN system is for use with a vehicle installed Cisco Aironet 350 Series Wireless Product. The
specific Cisco Aironet 350 Series product to be included with the system will be custom ordered by
product type and specific wireless system functionality required to support the platform installation. The
Cisco Aironet component is capable of operating at any one of the authorized Cisco output power-toexternal Power Amplifier unit settings designated in Table 2-2 below. However, it is recommended that
the Cisco Aironet component be normally operated at the 20 – 50 mW power setting based upon the radio
to amplifier feed cable length. The system is capable of operating with as little as 1mW input power
coming from the Cisco Aironet radio, however, the power amplifier output power will be less than its
designed 1-Watt output power.
Authorized
Power levels for
5dBi Gain Vehicle
Antenna
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Cisco Radio
Power set @
1mW
Cisco Radio
Power set @
5mW
Cisco Radio
Power set @
20mW
Cisco Radio
Power set @
50mW
Cisco Radio
Power set @
100mW
Extended Range WLAN Antenna Guide
External Power
Amplifier Output
1 Watt
No
Yes
Yes
Yes
Yes
Table 2-2 Authorized Cisco Radio and Power Amplifier Output Power Settings
The system will include an external (outdoor model) Teletronics SmartAmp 2.4 GHz (in-line AGC)
Power Amplifier unit that provides for a fixed 1-Watt (+30dbm) output power capability over the
complete range of Cisco radio component output (amplifier input) power settings identified in Table 2-1
above. The wireless system installer should normally configure the Cisco Aironet radio to supply between
a 20 – 50mW input power to the main amplifier based upon the cable feed-line losses between the Cisco
Aironet radio and the final positioning of the SmartAmp. The DC-Injector unit included with the
amplifier unit offers the ability to remotely mount the power amplifier nearer to the antenna’s physical
location while affording DC power coupling via the antenna coaxial feed cable for the main amplifier unit
operation.
The system will include one of two (orderable) Radio-to-DC-Injector unit connection assemblies:
•
•
A Radio-to-DC-Injector RF Cable Assembly (RP-TNC Female-to-N-Male) RG-174 (minimum cable
type) of a designated (ordered) length (12” minimum) for use in connecting the DC-Injector
module to the Cisco Aironet radio for remote mounting the main amplifier unit within a vehicle
compartment space; or
A Radio-to-DC-Injector RF Pigtail Cable Assembly (MMCX-to-N-Male) RG-174 (minimum cable
type) of a designated (ordered) length (12” minimum) for use in connecting the Mobile Computer
Terminal outfitted with a PCMCIA Cisco Aironet Wireless (LMC-352) PC Card radio MMCX
external antenna connection port to the N-type connection port of the DC-Injector module unit.
The system includes a DC-Injector to Power Amplifier RF Cable assembly; RG-174 cable type
(minimum cable type) customized at order for install cable length, with N-type Male connectors at each
end for use in connecting the (near the radio unit) DC-Injector unit to the remote mounted Power
Amplifier; the built-in input power auto-ranging power feature of the amplifier allows for variable vehicle
type cable lengths, routing and installation while compensating for feed line loss and maintaining
programmed output power to the antenna.
The system also includes a Mobile Mark Inc. 5 dBi Vertical Polarized, Omni-directional, Vehicle Mount
Antenna with a 12” (minimum) RG-195 cable assembly and N-Type Male connector for connecting to the
main Power Amplifier unit; vehicle antenna mounting hardware included; and specific vehicle install
antenna cable assembly lengths can be customized at order/install.
2.5.3
6 dBi Fixed Site Extended Range WLAN System Specifications
This WLAN system is for use with a (system included) fixed-site mountable Cisco Aironet 350 Series
Wireless Product. The specific Cisco Aironet 350 Series product to be included with the system will be
custom ordered by product type and specific wireless system functionality required to support the
platform installation. The Cisco Aironet component is capable of operating at any one of the authorized
Cisco output power-to-external Power Amplifier unit settings designated in Table 2-3 below. However, it
is recommended that the Cisco Aironet component be normally operated at the 20 – 50 mW power setting
based upon the radio to amplifier feed cable length. The system is capable of operating with as little as
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1mW input power coming from the Cisco Aironet radio, however, the power amplifier output power will
be less than its designed 500mW output power.
Authorized
Power levels for
6dBi Gain Fixed
Site Antenna
External Power
Amplifier Output
500mW
Cisco Radio
Power set @
1mW
Cisco Radio
Power set @
5mW
Cisco Radio
Power set @
20mW
Cisco Radio
Power set @
50mW
Cisco Radio
Power set @
100mW
No
Yes
Yes
Yes
Yes
Table 2-3 Authorized Cisco Radio and Power Amplifier Output Power Settings
The system will include an external (outdoor model) Teletronics SmartAmp 2.4 GHz (in-line AGC)
Power Amplifier unit with DC-Injector module that provides for a fixed 500mW (+27dbm) output power
capability over the complete range of Cisco radio component output (amplifier input) power settings
identified in Table 2-1 above. The wireless system installer should normally configure the Cisco Aironet
radio to supply between a 20 – 50mW input power to the main amplifier based upon the cable feed-line
losses between the Cisco Aironet radio and the final positioning of the SmartAmp. The DC-Injector unit
included with the amplifier unit offers the ability to remotely mast mount the power amplifier near the
antenna’s physical location while affording DC power coupling via the antenna coaxial feed cable for the
main amplifier unit operation.
The system includes a Radio-to-DC-Injector RF Cable Assembly (RP-TNC Female-to-N-Male) RG-174
minimum cable type of a designated (ordered) length (12” minimum) for use in remote connecting the
DC-Injector module to the Cisco Aironet radio under a variable unit positioning fixed site installation.
The system includes a DC-Injector to Power Amplifier RF Cable assembly and Lightning Arrestor unit;
LMR-400 cable type (minimum) customized at order/install for cable length, with N-type Male
connectors at each end for use in connecting the (near the radio unit) DC-Injector unit to the remote
antenna mast mounted Power Amplifier; the built-in input power auto-ranging power feature of the
amplifier allows for variable fixed site facility cable lengths, routing and installation while compensating
for feed line loss and maintaining programmed output power to the antenna.
The system includes a Mobile Mark Inc. 6 dBi Vertical Polarized, Omni-directional, Mast Mount
Antenna with a 24” (minimum) RG-142 cable assembly and 2 N-Type Male connectors used for
connecting the outdoor main Power Amplifier unit to the stick Antenna; antenna element to mast
mounting hardware included.
2.5.4
9 dBi Fixed Site Extended Range WLAN System Specifications
This WLAN system is for use with a (system included) fixed-site mountable Cisco Aironet 350 Series
Wireless Product. The specific Cisco Aironet 350 Series product to be included with the kit will be
custom ordered by product type and specific wireless system functionality required to support the
platform installation. The Cisco Aironet component is capable of operating at any one of the authorized
Cisco output power-to-external Power Amplifier unit settings designated in Table 2-4 below. However, it
is recommended that the Cisco Aironet component be normally operated at the 20 – 50 mW power setting
based upon the radio to amplifier feed cable length. The system is capable of operating with as little as
1mW input power coming from the Cisco Aironet radio, however, the power amplifier output power will
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be less than its designed 1-Watt output power. Warning: Operating the Northrop Grumman Extended
Range Amplified WLAN System in variance to the systems authorized antenna gain is prohibited and will
exceed authorized FCC emission levels.
Authorized
Power levels for
9dBi Gain Fixed
Site Antenna
External Power
Amplifier Output
500mW
Cisco Radio
Power set @
1mW
Cisco Radio
Power set @
5mW
Cisco Radio
Power set @
20mW
Cisco Radio
Power set @
50mW
Cisco Radio
Power set @
100mW
No
Yes
Yes
Yes
Yes
Table 2-4 Authorized Cisco Radio and Power Amplifier Output Power Settings
The system will include an external (outdoor model) Teletronics SmartAmp 2.4 GHz (in-line AGC)
Power Amplifier unit with DC-Injector module that provides for a fixed 500mW (+27dbm) output power
capability over the complete range of Cisco radio component output (amplifier input) power settings
identified in Table 2-1 above. The wireless system installer should normally configure the Cisco Aironet
radio to supply between a 20 – 50mW input power to the main amplifier based upon the cable feed-line
losses between the Cisco Aironet radio and the final positioning of the SmartAmp. The DC-Injector unit
included with the amplifier unit offers the ability to remotely mast mount the power amplifier near the
antenna’s physical location while affording DC power coupling via the antenna coaxial feed cable for the
main amplifier unit operation. Warning: Operation of this extended range amplified WLAN System at
power and antenna gain levels above the FCC authorized emission levels could subject the user to
possible FCC compliance fines and/or the removal of the equipment from operation.
The system includes a Radio-to-DC-Injector Adapter Cable (RP-TNC Female-to-N-Male) 12” (minimum) for use
in connecting the Cisco Aironet product that utilize the RP-TNC male external antenna connection port
(i.e., Access Point or Bridge unit) to the N-type female radio connection port of the DC-Injector unit;
The system includes a DC-Injector to Power Amplifier RF Cable assembly and Lightning Arrestor unit;
LMR-400 cable type (minimum) customized at order/install for cable length, with N-type Male
connectors at each end for use in connecting the (near the radio unit) DC-Injector unit to the remote
antenna mast mounted Power Amplifier; the built-in input power auto-ranging power feature of the
amplifier allows for variable fixed site facility cable lengths, routing and installation while compensating
for feed line loss and maintaining programmed output power to the antenna.
The system includes a Mobile Mark Inc. 9 dBi Vertical Polarized, Omni-directional, Mast Mount
Antenna with a 24” (minimum) RG-142 cable assembly and 2 N-Type Male connectors used for
connecting the outdoor main Power Amplifier unit to the stick Antenna; antenna element to mast
mounting hardware included.
2.5.5
Wireless LAN External Amplifier
Each of the Northrop Grumman IT Extended Range Amplified WLAN Systems described above uses the
Teletronics International, Inc. Smart Amplifier (SmartAmp) Bi-directional Power Amplifier 2.4 GHz
version. Vehicle installation systems will incorporate the outdoor model 1 Watt AGC amplifier with low
gain mobile antennas and fixed site system installations will utilize the outdoor model 500mW AGC
amplifier and higher gain antennas.
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Both of the Teletronics SmartAmp 2.4 GHz amplifier models features an auto ranging input RF drive
level capability which allows the amplifier to automatically determine the input RF level received from
the Cisco Aironet transceiver equipment and set its internal power gain to yield the full-programmed RF
output level. This auto ranging feature eliminates the necessity for (and inherent errors in) calculating
feed line losses between the data transceiver (Cisco radio card/unit) and the amplifier. The auto ranging
feature of the amplifier allows for variable installations to be handled with greater easy and flexibility for
feed line cable lengths and routing concerns. Essentially, the length of the feed line cable does not matter
as long as the prescribed (minimum) input RF drive level is maintained at the amplifier, the amplifier will
maintain it programmed maximum output power to the antenna.
The SmartAmp power amplifier specifications and input drive level for desire output power level are
specified in Tables 2-5 and 2-6 for each different power output model below:
Operating Range
Operating Mode
Transmit Output Power
Transmit Input Power
Transmit Gain
Receive Gain
Frequency Flatness
Noise Figure
Lightening Protection
DC Surge Protection
LED indicators on Amp
Operating Temperature
Power Supply
RF Connector
2400 ~ 2500 MHz
Bi-directional TDD
+30 dBm (1 Watt )
3 dB min, 23 dB max
Automatically adjusts up to 27dB
17 dB
±1.0 dB
3.5 dB
Direct DC ground at antenna port
At 12 V DC input
Tx: Green, Rx: Red
-40 °C ~ + 75 °C
12 V DC at 1.1 Amp
Type N, Female
Table 2-5. 1-Watt SmartAmp Power Amplifier Specifications
Operating Range
Operating mode
Transmit Output Power
Transmit Input Power
Transmit Gain
Receive Gain
Frequency Flatness
Noise Figure
Lightning Protection
DC Surge Protection
LED Indicators
Operating Temperature
Power Supply
Connectors
2400 – 2500MHz
Bi-directional TDD
+27dBm (500mW)
0 dBm min, 23 dBm max
Automatically adjusts up to 26dB
14 dB
+/- 1.0 dB
3.5 dB
Direct DC ground at Antenna port
At 12 VDC input
Tx: Green, Rx: Red
-20 C ~ 70 C
12 VDC at 0.7 amps
Type N, Female
Table 2-6. 500 mW SmartAmp Power Amplifier Specifications
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CAUTION: The configured output power for the Cisco Aironet device sets the maximum expected
input drive level to the external power amplifier. Therefore, it is essential that the Cisco Aironet device be
configured for an output power level consistent with the charted input drive values stated in Tables 2-5 &
2-6 above respective to the power amplifiers specifications and feed line cable losses.
2.5.6
Additional Wireless LAN System Components
The wireless LAN integration company/installer will be responsible for providing any additional site
and/or vehicle WLAN system equipment, engineering, and installation services to include providing for:
•
•
•
•
Site Survey Engineering & Design;
Antenna Mast Assemblies;
Antenna System Grounding; and
Professional installation services per this Extended Range Amplified WLAN System Installation
Guide and the system component equipment manufacturer User’s Guide and installation Manuals
3 Configuring the Extended Range Amplified WLAN System
3.1
Setting the Cisco Aironet Channel Settings
The Northrop Grumman IT Extended Range Amplified WLAN System is approved for operation on
seven (7) US and Canada 802.11b operating frequency channels. These seven channels are a subset of the
11 US/Canada standard IEEE 802.11 channels. The wireless LAN installer should refer to the Cisco
Aironet product equipment User’s guide and Installation Manual for specific channel configuration and
setting procedures. Table 3-1 below outlines the authorized 802.11 channels available for use with the
extended range WLAN system.
NOTE: This equipment is not authorized and may not be operating on IEEE 802.11 channels 1, 2, 10,
and 11 at output power levels above 100mW. If you wish to interoperate with IEEE 802.11 Wireless LAN
compatible equipment on these excluded channels, you should NOT use this amplified antenna system.
This extended range amplified antenna system is for use at power levels above the Cisco Aironet
equipment’s standard 100mW output; and therefore you must set the Cisco Aironet equipment to use only
one of the channels (A-G) shown below.
Channel
Corresponding IEEE 802.11
Channel Center Frequency
Channel
NOT USED
2412
NOT USED
2417
2422
2427
2432
2437
2442
2447
2452
NOT USED
10
2457
NOT USED
11
2462
Table 3-1. Authorized Cisco Aironet Channel Settings
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3.2
Configuring the Cisco Aironet Radio Unit Antenna Connection Port
The Northrop Grumman IT Extended Range Amplified WLAN Antenna system can only be used with the
Cisco Aironet 350 Series wireless products that are designed for use with an external antenna connection
capability. Specifically, these Cisco Aironet 350 Series products include the AIR-LMC-352 PC Card,
AIR-WGB-352R Work Group Bridge unit, AIR-AP352E2R-A-K9 Access Point unit, and the AIRBR352R-A-K9 Bridge units. These particular Cisco Aironet units are each outfitted with two external
antenna connection ports. Each of the radio unit’s antenna connection ports are uniquely designed for use
with either the Reverse-Polarity-TNC male connector, such as in the case of the Work Group Bridge,
Access Point, and Bridge, or for use with a MMCX plug connector such as the case with the LMC-352
PC Card radio device. The WLAN system will include a matching Cisco Aironet radio-to-DC Injector
connecting cable for use in connecting the antenna system to the each kit’s (ordered) Cisco Aironet radio
component. Typically, only the right side or primary labeled antenna connection port will be used in most
external system installations. The right hand or primary antenna port serves as both the radio units
primary transmit and receive antenna port. The right side or primary antenna connection can be
determined by looking directly at the antenna connection ports from the rear of the Cisco Aironet device,
the right-hand external antenna connector will be labeled P/R, Primary/Right or J1/PRI (based upon the
product). The left-hand located external antenna connector (labeled L, Left, or J2) is used for the auxiliary
connection of a Receive Diversity antenna that in some installations may improve the radios receive
capability by overcoming some multipath conditions. The Northrop Grumman IT Extended Range
Amplified WLAN Antenna system should only be connected to the primary (J1) or right-hand side
external RP-TNC antenna connection port on the Cisco Aironet 350 Series product.
The Cisco Aironet 350 Series product manages it’s “in use” antenna connection ports via software
configuration control over the left and right antenna ports based upon enabling or disabling the left or
right antenna port or enabling or disabling the receive diversity function (disables the left antenna). The
Cisco Aironet radio unit must be configured to use the right or primary antenna connection port as the
primary or sole transmit/receive antenna connection port. The units left antenna connection should be
configured as disable (or diversity off), unless a Receive Diversity antenna is to be used within the
particular system installation. In all installations, the primary/right (transmit & receive) antenna
connection port will be used as the point of attachment for the extended range amplified system. The
wireless LAN installer should refer to the Cisco Aironet product equipment User’s guide and Installation
Manual for reviewing, configuring, and settings the antenna connection port parameters.
3.3
Configuring The Cisco Aironet Radio Unit Output Power Setting
The Northrop Grumman IT Extended Range Amplified WLAN System is approved for operation with the
Cisco Aironet 350 Series product at various power output levels specific to the power amplifier output
power and the system model supporting the Cisco radio unit. Section 2.5 previous lists by System model
the Cisco Aironet radio unit power settings per system amplifier and antenna gain authorized for use. The
power output specifications and antenna gains listed within each of the Section 2.5 tables must be adhered
to respective to the Northrop Grumman Extended Range WLAN System model being installed.
The wireless LAN installer should refer directly to the Cisco Aironet product equipment User’s guide and
Installation Manual for proper configuration procedures in setting the required Cisco radio unit output
power level.
Warning: Operating the Cisco Aironet equipment with Power Amplifier power levels and/or antenna
gains in variance to the WLAN system specifications shown in the Tables 2-1 through 2-4 previous is
prohibited and may exceed authorized FCC RF power level specifications.
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3.4
Other Wireless LAN System Configurations
Any additional wireless LAN system component parameter configurations such as Cisco Aironet radio
unit network SSID and IP assignment; WEP encryption codes, protocol filtering, etc. should be referred
to the specific equipment’s User’s Guide for proper configuration procedures and settings.
4 Installation
4.1
Installation Notes
4.1.1
•
•
•
•
•
•
•
User’s guide and Installation Manuals for all equipment
Assorted open-end and/or adjustable wrenches
Antenna Cable clamps and/or Cable hanging kits
Wire cutter/stripper
Cable Connector Crimping tool
Screw Driver Set – cross tip and flathead
Pliers
4.1.2
•
•
•
Other Required Equipment
Suitable Antenna Mast Assembly; or
Tower hardware
Antenna Grounding Kit
4.1.3
•
•
•
•
•
•
Primary Required Tools
Helpful Tools and Equipment
Cellular telephones or Walkie-talkies
Binoculars
Compass
Leveling Tool
Handheld GPS
Ladder
4.1.4
Installation Site Survey
Prior to installing the Extended Range Amplified WLAN System, the site or vehicle platform targeted for
installation must be surveyed for engineering design and installation. Adherence to Maximum Permissible
Exposure (MPE) RF Radiation Hazard distances must be reviewed and antenna locations planned for
minimizing potential RF energy human exposure levels to personnel working in the vicinity of the
amplified antenna location as well as minimizing any potential co-site radio interference issues. This is
particularly important for vehicle amplified antenna system installations with regards to vehicle
occupants, the general public, and co-site operation with other vehicle radio communications systems.
Paragraph 1.3.3, Cautions and Warnings previous, identifies the minimum MPE distances that must be
adhered to for general public MPE compliance. Additionally, Figure 4-1 WLAN MPE and Co-site
Antenna Distances shown below describes the minimum as well as recommended co-sited WLAN
antenna and Radio System antenna positioning for a typical public safety vehicle.
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During fixed site WLAN surveys and analysis, emphasis should also be placed on locating the antenna in
a position that that is free of obstructions near the antenna location. Such obstructions include large trees,
air conditioning units, other antenna masts, chimneys, retaining walls, and so forth can significantly affect
the LOS range of the WLAN system. Daily routine delivery vehicles can even obstruct the antenna’s
performance if not appropriately positioned for. The site survey and resulting plan should take all these
elements into consideration. The fixed site antenna should be mounted as high as possible. The antenna
mast should place the antenna at least 10 to 15 feet above the rooftop or above any obstruction obstructing
the antenna’s LOS signal path. A note should be made of the antennas position, required mast height, and
the type of mounting hardware needed. Antenna-to-Antenna Mast U-bolt mounting hardware is shipped
with the amplified WLAN system and should meet the requirements for most types of mast installation.
The means for communicating with helpers at the antenna site while conducting link testing should also
be planned in advance. For instance, walkie-talkies or cellular phones would be very helpful during this
procedure.
Any necessary routing for the feed line antenna cable must be determined. If the cable extends through
the roof or wall, appropriate waterproof fittings and/or conduit paths must be used. A licensed antenna
specialist or roofing contractor should be consulted to assist with proper cable routing and antenna
installation specifics, as necessary. Electrical power considerations for both fixed site and vehicle
installations must be made in advance for properly installing the extended range antenna system. A
licensed electrician or vehicle system installation specialist should be consulted to assist with ensuring
proper AC and/or DC power requirements are met, as necessary.
WARNING:
The vehicle mounted WLAN Antenna must be
positioned a “minimum of 20 cm” away from
any outside edge of the vehicle facing the general
public And at least 20 cm from “any other”
vehicle installed radio antenna in order to meet
RF Hazard Exposure (MPE) and radio co-site
MPE requirements.
Possible WLAN Antenna Positioning
Locations with 20 cm space free radius
The recommended co-sited Antenna distance
should be at least 40 cm apart if at all possible.
20 cm
20 cm
20 cm
20 cm
20 cm
20 cm
20 cm
20 cm
20 cm
Potential Vehicle Radio Antenna with 20 cm space free radius
20
20 cm
20 cm cm
Other Vehicle Roof/Trunk Available
Area for WLAN Antenna Mounting
20 cm
20
20
cmcm 20 cm
20 cm
20 cm
Note: Specific radio antenna positioning will be variable per the
Vehicle type and radio system type - and it may include multiple
radio antennas. The WLAN and radio are recommeded to be mounted
at least 40 cm apart from each other.
Figure 4-1 WLAN Antenna and Co-site Antenna MPE Distances
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4.1.5
Installation Safety and Equipment Warnings
NOTE: Only experienced antenna installers who are familiar with local building and safety codes, and
have been licensed by appropriate government regulatory bodies wherever necessary shall install the
antenna system. Failure to do so may void the product warranty, as well as expose the end-user to legal
and/or financial liabilities. Northrop Grumman IT, its agents, resellers, or distributors, are not liable for
injury, damage, or violation of government regulations that may arise from failing to comply with the
guidelines described in this document.
WARNING: Before performing any of the following steps, ensure there are no power
lines within 50 feet of the installation site. If a mast should fall during installation or during
operation, contact with any power line may result in fire and can be fatal.
WARNING: The Northrop Grumman Fixed Site Extended Range Amplified WLAN
Systems are designed for Antenna mounting in open areas such as on rooftops or building
exterior walls. The Antenna should be installed with at least 2 meters clearance from areas
generally occupied by people over an extended period of time (>30 minutes). In lesser
cases, touching and/or coming within 20cm (7.9 inches) of the Antenna should be avoided if
at all possible.
WARNING: The Northrop Grumman Vehicle Extended Range Amplified WLAN
Systems are designed for Antenna mounting in an open area such as on the vehicle roof or
trunk compartment. The Antenna should be installed with at least 1 foot of clearance (20 cm
minimum) from any outside edge of the vehicle roof, trunk, other radio system antenna, or
other area generally occupied by people over an extended period of time (>30 minutes). In
the minimum case, touching and/or coming within 20cm (7.9 inches) of the Antenna should
be avoided if at all possible.
WARNING: Never use a power supply other than the one shipped with the system.
Doing so may cause damage to the radio and/or the amplifier.
4.1.6
Cisco Aironet Programming and Settings
The Cisco Aironet radio device should be verified or configured for its designated output power setting
prior to fix mounting the Cisco radio unit and main amplifier unit to a fixed site antenna mast or
attachment to a vehicle system mounting assembly.
4.1.7
Antenna Installation
Detailing a specific vehicular WLAN system antenna or fixed site mast mount antenna installation
procedure is beyond the scope of this installation guide as the WLAN system installation can vary from
site to site and vehicle type to vehicle type. The wireless system installer should be fully knowledgeable
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with the installation procedures, safety, and code requirements for installing the particular vehicular
and/or fixed site WLAN system antenna, antenna mast assembly, antenna cabling, lightning protection,
and grounding requirements for an installation. Northrop Grumman IT highly recommends that the
Extended Range Amplified WLAN System be installed only by a qualified antenna installation
professional that is familiar with vehicular radio communication and/or fixed site WLAN system
installations. The antennas contained within each extended range WLAN system are designed for
mounting on the appropriate kit platform. Each extended range WLAN system includes the necessary
antenna hardware pertinent for mounting the antenna on the platform designated by the kit type.
However, additional necessary site specific antenna mast/tower assemblies, guide lines, grounding
wire/kits, cable ties, etc. are not provided within the Extended Range WLAN system; and therefore, these
items as necessary for a particular installation will need to be provided by the WLAN system installer.
4.2
Installing the Fixed Site Extended Range (Amplified) WLAN System
Different model extended range WLAN systems for fixed platform sites will have different mounting
requirements and different installation mechanics/procedures based upon the building/site facilities. The
following instructions provide for a generalized procedure for installing and cabling the fixed site
extended range WLAN system.
4.2.1
Installing and Cabling the Antenna and Amplifier Unit
The steps listed below are applicable for both the 6dBi or 9dBi model Fixed Site Extended Range
(Amplified) WLAN System.
•
•
•
•
•
•
•
•
Attach the (installer provided) antenna mast assembly and mounting hardware to a solid structure
on the building (i.e., the roof top, concrete bulkhead, vent pipe, etc.).
Using the kit included mounting hardware; secure the fixed site antenna to the top section of the
antenna mast assembly.
Attach the kit included Teletronics SmartAmp main (remote) amplifier unit directly beneath the
antenna element assembly using the included U-bolts. The distance below the antenna should be
approximately 12 – 14 inches based upon maintaining an adequate feed line cable loop between
the devices.
Connect one end (N-Male connector) of the kit included PA-to-Antenna RF cable assembly
(minimum 2 feet RG-142 type cable) to the antenna (N-Female) connector and connect the other
end of the cable assembly (N-Male) to the SmartAmp amplifier unit’s (N-Female) connector
labeled ANTENNA on the amplifier.
Connect one end of the kit included DC-Injector-to-PA (feed line) RF cable assembly (N-Male
connector) to the SmartAmp main amplifier unit (N-Female) connector labeled DC-INJECTOR
on the amplifier.
Apply weather sealant tape around all cable connections made at the antenna and the power
amplifier. Wrap the entire connection, overlapping each layer slightly to ensure a weather-tight
seal. This will prevent corrosion of the connections from the weather.
Connect a suitable grounding cable or grounding kit (installer provided) between the antenna
mast assembly and the building ground to ground the antenna system.
Tie down the antenna RF cable assembly to the mast every six to twelve inches using plastic tie
wraps or other cable hanging kit tools and carefully raise the antenna mast. Loosely secure it with
the mounting hardware.
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•
•
•
•
•
•
•
•
4.2.2
Using a leveling tool, ensure the antenna mast assembly and most importantly the omnidirectional antenna element are positioned vertically for best omni-directional beam and pattern
performance.
Securely tighten the mast mounting bolts/screws.
Route the amplifier feed line RF cable assembly via appropriate cable access conduit and preinstallation routing plan to the equipment room or equipment enclosure box that will house the
Cisco Aironet AP radio unit and the power amplifier DC-Injector module (i.e., Telco room,
network closet, or outdoor enclosure box).
Place and mount the kit included DC Power Injector module and module Power Supply within
the equipment room/enclosure near the Cisco Aironet radio unit. Position the module unit so that
the LED indicators are easily visible to the installer for operational condition indication and/or
visual troubleshooting diagnosis.
Connect one side of the kit included Lightning Arrestor (N-female connector) to the DC-Injector
module (N-Female) connector labeled Amplifier by utilizing a N-Male-to-N-Male adapter
connector.
Connect the near end of RF feed line cable assembly (N-Male connector) routed from the remote
amplifier position to the other side (N-Female) of the Lightning Arrestor to complete the feed line
cabling connections from the antenna to the DC-Injector output via the remote mounted main
amplifier unit.
Attach a ground wire (6 AWG) to the ground lug on the Lightning Arrestor and connect the
grounding cable securely to building ground.
Plug the DC-Injector Power Supply module’s DC-In male connector into the Injector module’s
DC-In female jack and then plug the power supply unit into the building AC power source. It is
recommended that a commercially available surge protector power strip be used for the AC
connections. Check the DC-Injector LED for Power being applied – green light.
Installing and Connecting the Cisco Aironet 350 Series Radio Device
The installation method used for installing the Cisco Aironet device (i.e., 350 Series Access Point or
Bridge unit) depends upon the site facilities to be fitted with the device. The WLAN installer is directed
to follow the basic hardware mounting and installation instructions described within the product’s User’s
Guide and Installation Manual.
Generalized Cisco Aironet radio component to amplifier and antenna cabling connections are described
below:
•
•
•
•
•
Mount the Cisco Aironet radio device per the products User’s Guide and Installation Manual.
Attach the RP-TNC Male end of the kit included Cisco Radio-to-DC-Injector RF Cable Assembly
(feed line cable) to the “Right/Primary” labeled external antenna connector port (RP-TNC Female)
on the rear of the Cisco Aironet radio unit and securely tighten.
Attach the cable’s other connector end (N-Male) to the N-Female connector labeled RADIO on the
amplifier DC-Injector module and securely tighten. Note: Certain installation may require the use
of a Cisco Radio-to-DC Injector Adapter Connector (RP-TNC Male-to-N-Male) in substitution to the
Cisco Radio-to-DC Injector RF Cable Assembly to allow for a direct connection of the DC
Injector module to the Cisco radio external antenna connection port.
Connect an Ethernet (CAT 5) cable to the Ethernet connection port on the rear of the Cisco Aironet
radio device labeled “Inline Power Ethernet.”
Route the Ethernet cable (as required) from the physical Cisco Aironet (AP/Bridge) unit’s
location to the appropriate network data source location (i.e., Telco, network closet, or power
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•
•
•
•
4.3
room, etc.). Note: The Cisco Aironet 350 Series wireless Access Point or Bridge is powered
remotely by utilizing a Power-over-Ethernet (POE) module (AIR-PWRINJ).
Connect the near end CAT 5 Ethernet cable connection into the POE Module’s port labeled “To
AP/Bridge.” Note: Internally the POE module applies the required operating DC voltage for the
Cisco Aironet radio onto the Ethernet (CAT 5) cable’s unused wire pairs.
Position the POE power injector (as required) and connect/power the module’s AC power cord
into an AC power source. It is recommended that a commercially available surge protector power
strip be used for the AC connections.
Make an Ethernet network cable connection coming from the wired network switch, hub, or
router device to the POE module’s Ethernet (CAT 5) connection port labeled “To Network.”
Configure the necessary Cisco Aironet and/or network system parameters and test the installed
extended range WLAN system.
Installing the Vehicle Extended Range (Amplified) WLAN System
Different vehicle platform types will have different mounting requirements and different installation
mechanics and cable routing procedures based upon the type of vehicle Cisco Aironet radio equipment
being supported, vehicle compartment space available for locating components, vehicle DC/AC power
availability, and most importantly the vehicle antenna’s installed location and proximity to other radio
communications antennas, RF safety concerns, and the desired antenna pattern to be achieved. The
WLAN system installer is encouraged to conduct a detailed engineering and antenna positioning study for
each type of vehicle slated for WLAN system installation to determine the optimum placement and
location of the antenna and other system components within the vehicle. Critical factors such as: RF
hazard and MPE distances, radio co-site interference, and other general safety and equipment protection
concerns need to be considered and fully mitigated prior to installing the vehicle extended range WLAN
system within a given vehicle platform. Figure 4-1, WLAN MPE and Co-site Antenna Distances shown
previous presents the minimum as well as recommended MPE antenna location distances for installation
of the vehicle mobile antenna on a typical public safety vehicle. Northrop Grumman highly recommends
that a professional vehicle system installer thoroughly familiar with vehicle radio communication system
installations install the vehicle extended range WLAN system.
The installer should make every effort to provide for and mount all of the ’s WLAN system components
(i.e., amplifier, Cisco radio device, and/or other ancillary intra-vehicle network devices) within a single
unit housing/mounting cage assembly, rack, or other vehicle appropriate equipment protection assembly
so as to offer an easy one-unit mounting assembly to support the particular vehicle space installation. The
housing assembly should provide for maximized equipment protection of the encaged WLAN system
components so as to protect them from potential damage caused by other shared compartment location
use, storage, or occupancy.
4.3.1
Installing and Cabling the Antenna and Amplifier Unit
The steps listed below provide for a generalized procedure for installing and cabling the vehicle extended
range WLAN system and these steps are applicable for both the 3dBi or 5dBi model Vehicle Extended
Range (Amplified) WLAN Systems.
•
Base upon the pre-installation engineering study and installation plan, drill, mount and attach the
vehicle antenna to the vehicle in the location specified by the installation plan (i.e., roof, trunk, or
fender well) utilizing the mounting hardware included with the vehicle antenna.
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•
•
•
•
•
•
•
•
•
4.3.2
Route the antenna’s attached RF cable assembly carefully within the vehicle compartment space
(i.e., roof lining, side panels, and/or floor covering/pathways) to the location where the main
power amplifier will be mounted within the vehicle. Note: The antenna RF cable length is
generally ordered in a length commiserate to support the vehicle’s planned antenna positioning
for the type of vehicle being installed.
Securely strap or tie-tie all exposed antenna cable points to keep the cable in place and free from
being damaged or snagged by general vehicle occupancy and/or equipment storage within the
shared compartment space.
Mount and attach the kit included Teletronics SmartAmp main amplifier unit within the vehicle
storage compartment space as identified by the vehicle’s pre-installation plan. The amplifier unit
should be mounted in a location that is free from and protected against damage caused by other
compartment space utilization (i.e., protected against damage from other items shifting within the
storage compartment space; such as other trunk components or storage gear).
Connect the antenna RF cable assembly’s (N-Male) end connector to the SmartAmp amplifier
unit’s (N-Female) connector labeled ANTENNA on the amplifier.
Connect one end of the kit included DC-Injector-to-PA (feed line) RF cable assembly (N-Male
connector) to the Teletronics SmartAmp main amplifier unit (N-Female) connector labeled DC
INJECTOR on the main amplifier unit.
Route and proper tie-tie in place the DC-Injector-to PA feed line RF cable assembly per the
installation plan to the vehicle compartment location identified for mounting the DC-Injector
module (typical for most vehicle installs – the DC-Injector module would be collocated near the
main amplifier unit’s location and therefore offer a very short cable run or be direct connected via
a N-Male-to-N-Male Adapter).
Mount and attach the kit included DC Power Injector module and AC Power Adapter within the
vehicle storage compartment space as identified per the vehicle’s installation plan. Typically, this
position would be collocated near the main amplifier unit within the vehicle storage compartment
space. The DC-Injector should be positioned so that the LED indicators are easily visible to the
installer for operational condition indication and/or visual troubleshooting diagnosis. The DCInjector module should also be mounted in a location that is free from and protected against
damage caused by other compartment space utilization.
Connect the remaining unconnected end of the DC-Injector-to-PA cable assembly (N-Male) to
the DC-Injector module (N-Female) connector labeled Amplifier.
Plug the DC-Injector Power Supply module’s DC-In male connector into the Injector module’s
DC-In female jack and then plug the power supply unit into a AC Surge Protector power strip that
is being powered by the vehicle’s DC-AC power inverter source.
Installing and Connecting the Cisco Radio Device
The installation method used for installing the Cisco Aironet radio device (i.e., PC Card or Work Group
Bridge unit) will depend upon the specific Cisco Aironet radio device ordered with the vehicle extended
range WLAN System. The WLAN installer is directed to follow the basic hardware mounting and
installation instructions described within the Cisco Aironet product’s User’s Guide and Installation
Manual for installing the LMC-352 PC Card or attaching a 350 Series Work Group Bridge unit to the
vehicle’s Mobile Data Computer (MDC) unit.
Typical vehicle extended range WLAN System installation steps and connections to be followed for
properly installing the particular Cisco Aironet radio component with the amplified antenna system are
described below:
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4.3.2.1 Wireless LMC-350 PC Card Client Adapter
•
•
•
•
•
•
•
Install and configure the Cisco Aironet LMC-350 PC Card within the vehicle’s MDC terminal per
the Cisco Aironet 350 Series Client Adapter User’s Guide and Installation Manual.
Connect right angle MMCX-plug connector end of the kit included Cisco Radio-to-DC-Injector RF
Cable Assembly (RG-174 cable type minimum) carefully into the wireless PC Card adapter’s
right-hand side MMCX external antenna connection jack labeled J1/PRI. Note: The right-hand jack
on the PC Card is viewed when looking card label side up and directly at the end of the PC card
for viewing both external connection ports. The cards specific connection port labeling is also
shown on the bottom side of the card.
The MMCX cable connection to the wireless PC Card is very fragile and can be easily damaged or
disconnected if bumped or pulled. The installer should take precautionary measures to protect the
connection from damage and/or errant disconnection during normal vehicle occupancy,
equipment use, and/or shifting of equipment in storage. It is recommended at a minimum that a
small (1-2”) piece of electrical tape be placed securely over the wireless PC Card cable
connection (wrapped from top of card to bottom of card) to hold the cable connection securely
fastened into the mating PC card jack – once taped in place the PC Card should be inserted/reinserted into the MDC’s mating PCMCIA card slot.
Route the remaining Cisco Radio-to-DC Injector RF (feed line) cable assembly per the
installation plan to the DC-Injector module’s installed location within the vehicle. Typical within
most vehicle installs – the DC-Injector unit would be located in the trunk or storage compartment
area and therefore the cable assembly would route/run from the MDC installed PC Card to the
vehicle storage space where the DC Injector unit is mounted. The kit’s included Cisco Radio-toDC-injector RF cable assembly would be ordered in the length necessary for RF feed line from
the radio card to the DC-Injector unit located remotely in the trunk.
Connect the other connection end (N-Male) of the Cisco Radio-to-DC Injector cable assembly to
the DC Injector module connector (N-Female) labeled RADIO on the DC-Injector module.
Check all antenna system component connections and ensure all cable assemblies are securely
connected.
Configure the necessary Cisco Aironet Client Adapter and/or other network system parameters
and test the installed vehicle extended range WLAN system.
4.3.2.2 Cisco Aironet Wireless Work Group Bridge Unit
•
•
Install the Cisco Aironet 350 Series Work Group Bridge unit and accompanying AC Power
Adapter within the vehicle’s storage compartment space as identified by the vehicle’s preinstallation plan. The Cisco Work Group Bridge unit should be mounted in a location that is free
from and protected against damage caused by other compartment space utilization (i.e., protected
against damage from other items shifting within the storage compartment space. Typically, the
Cisco Aironet Work Group Bridge unit would be collocated near the WLAN Systems amplifier
and DC Injector module units.
Connect the RP-TNC Male connector end of the kit included Cisco Radio-to-DC Injector RF Cable
Assembly (RG-174 cable type & 12” length minimum) to the “R/P” labeled external antenna
connector port (RP-TNC Female) on the front of the Cisco Aironet Work Group Bridge unit and
securely tighten. Note: The right-hand connection port is viewed when looking directly at the
bridge unit’s front side external connection ports. The port is also labeled “R/P” on the underside
of bridge unit below the connection port.
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•
•
•
•
•
•
•
•
•
•
•
Connect the other end (N-Male) of the Cisco Radio-to-DC Injector RF cable assembly to the
connector (N-Female) labeled RADIO on the DC-Injector module unit and securely tighten.
Route and tie wrap the remaining Cisco Radio-to-DC-Injector RF (feed line) cable assembly
neatly per the installation plan to preclude the cable from being damaged or snagged by other
typical compartment use (i.e., free from being damage or snagged by other stored or shifting
storage compartment items).
Plug the bridge unit’s (standard COTS provided) AC power adapter DC-In male connector plug
into the Bridge unit’s DC-In female jack located on the front side of the bridge unit.
Plug the AC adapter’s AC plug connector into an AC Surge Protector power strip that is
subsequently being powered by the vehicle’s DC-AC power inverter source.
Install an (installer provided) intra-vehicle (peripheral device) network Ethernet Hub or Switch
unit and accompanying AC Power Adapter within the vehicle’s storage compartment space as
identified by the vehicle’s pre-installation plan. The intra-vehicle Hub or Switch unit should be
mounted in a location that is free from and protected against damage caused by other
compartment space utilization (i.e., protected against damage from other items shifting within the
storage compartment space. Typically, Hub or Switch unit would be collocated with the Cisco
Aironet Work Group Bridge and other WLAN System principal components (i.e., amplifier and
DC Injector module).
Install any user required (installer provided) intra-vehicle peripheral network devices (i.e., printer,
vehicle local PDA wireless AP, fingerprint scanner, etc.) and any accompanying AC Power
Adapters within the vehicle’s storage compartment space as identified by the vehicle’s preinstallation plan. These peripheral network devices should be mounted in a location that is free
from and protected against damage caused by other compartment space utilization.
Connect an Ethernet (CAT 5) cable to the Work Group Bridge unit’s Ethernet connection port on
the front of the bridge unit labeled “Ethernet.”
Route the Bridge unit’s Ethernet cable (as required) from the Bridge unit’s location to the
vehicle’s installed intra-vehicle data network Ethernet Hub or Switch unit collocated near the
Bridge unit’s location within the vehicle.
Connect an Ethernet (CAT 5) cable to the MDC terminal’s Ethernet connection port, route the
Ethernet cable per the pre-installation plan, and connect the other end of the Ethernet cable into
an available open port on the vehicle’s intra-vehicle data network Ethernet Hub or Switch unit.
This Ethernet connection provides an MDC network connection via the hub/switch to the Work
Group Bridge and the extended range wireless LAN network it supports. Note: Should the
particular vehicle installation not include provisioning for a intra-vehicle LAN capability, a CAT 5
“crossover” Ethernet cable should be used to directly connect between the Cisco Aironet Work
Group Bridge Ethernet connection port and the Ethernet connection port on the MDC terminal in
order to support vehicle MDC network connectivity to the Bridge unit’s offered extended range
wireless LAN capability.
Connect/Make any other (as required) ancillary intra-vehicle peripheral Ethernet data connections
between the ancillary network component and the vehicle’s Ethernet hub or switch unit.
Configure the necessary Cisco Aironet Work Group Bridge and/or network system parameters
and test the installed vehicle extended range WLAN system.
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5 Post Installation Testing
5.1
Basic System Operational Checks
Basic system operational checks are performed using the system diagnostic LED indicators on the Cisco
Aironet and DC Injector module devices. Power on the vehicle MDC, fixed site network, and all wireless
LAN system devices and verify the following:
1. Power is being applied to the Cisco Aironet wireless radio components.
2. Ethernet Activity is being indicated by the Cisco Aironet radio unit Indicator Light
3. AP or Client association status is being indicated by the Cisco Aironet radio unit Association
Status Indicator Light
4. Radio activity is being indicated by the Cisco Aironet radio unit Radio Activity Indicator Light
NOTE: If any of the above conditions are not being met – the installer should refer to the specific Cisco
Aironet product User’s Guide for troubleshooting the Cisco Aironet equipment.
5.
6.
7.
8.
Power is being provided to the DC Injector module– the LED indicator is illuminated green.
Amplifier is in receive data mode – the Bi-color LED indicator is illuminated red.
Amplifier is in transmit data mode – the Bi-color LED indicator is illuminated green.
Amplifier is processing high-speed (Tx/Rx) data – the Bi-color LED indicator is orange
commiserate to the Cisco Radio Activity Indicator light flashing
NOTE: In bright sunlight, the LED indicators may be difficult to see.
5.2
WLAN System Diagnostics
It is highly recommended that the WLAN system installer run appropriate WLAN system diagnostics and
network link quality, range, and throughput measurement tests to ensure optimal extended range
(amplified) WLAN antenna system performance is being achieved.
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Appendix A – Acronym List
AP
DSSS
FCC
IEEE
IEEE 802.11
IT
LAN
LED
LOS
PCMCIA
RF
SmartAmp
WLAN
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Access Point
Direct Sequence Spread-Spectrum
Federal Communications Commission
Institute of Electrical and Electronic Engineers
IEEE standard for wireless LANs
Information Technology
Local Area Network
Light Emitting Diode
Line-of-sight
Personal Computer Memory Card International Association
Radio Frequency
Teletronics Smart Amplifier
Wireless LAN
Extended Range WLAN Antenna Guide
Appendix B – Wireless
IEEE 802.11b Overview
Since the early 1970’s, the basic technology has been in place for LANs to blossom in both the public and
private sectors. Standard LAN protocols, such as Ethernet, operate at relatively high speeds using
inexpensive connection hardware to bring digital networking to almost any computer. Until recently,
however, LANs were limited to the physical, hard-wired infrastructure of the building. Even with phone
dial-ups, network nodes were limited to access through wired, landline connections. The major motivation
for and benefit of wireless LANs is increased mobility. Simply stated, the architecture employed uses
fixed network Access Points (APs), which are capable of communicating with mobile nodes. The network
APs are then connected via landlines to widen the LAN's capability by bridging wireless nodes to other,
wired, nodes. By overlapping the service areas, handoffs can be made to occur. This structure is very
similar to the present day cellular networks around the world.
The Institute of Electrical and Electronic Engineers (IEEE) is an international body that defines standards
for electrical devices. IEEE 802.11 is the proposed standard for wireless LANs, with provisions for data
rates of either 1 Mbps or 2 Mbps. The standard encompasses Infrared (IR) Pulse Position Modulation,
Frequency Hopping Spread-Spectrum (FHSS), and Direct Sequence Spread-Spectrum (DSSS)
technologies. For the two spread-spectrum technologies, IEEE 802.11 calls for operation in the 2.4 2.4835 GHz frequency range – an unlicensed band that the Federal Communications Commission (FCC)
has authorized for industrial, scientific and medical (ISM) applications.
While the FHSS technology is limited to a throughput of 1 - 2 Mbps under the 802.11 standard, the DSSS
technology operates under an enhanced version of the standard (IEEE 802.11b) which enables operation
with a variable throughput capability of 1, 2, 5.5 or 11 Mbps. The result of the much higher bandwidth
afforded by employing IEEE 802.11b DSSS wireless communications is the ability to transfer much more
data than is possible using IEEE 802.11 FHSS or the many other radio frequency (RF) data
communications media operating in the 400, 450, 800, and 900 MHz frequency bands. This greater
bandwidth finally permits the implementation of dynamic, highly mobile, wireless LANs capable of data
throughput and performance characteristics comparable to that found in typical wired networks.
It must be noted, however, that there are significant limitations associated with the IEEE 802.11b
technology. First, the higher operating frequencies result in an inherently shorter communication range
for a given RF power output. Second, as a radio technology, it is primarily a half-duplex device –
meaning that it will not transmit and receive simultaneously. The advertised throughput speeds are raw
data rates. Due to overhead and the half-duplex nature of the device, the effective throughput speeds are
generally less than half of their advertised rates. Finally, as with most low power RF devices, optimal data
throughput speeds will be achieved only when clear line-of-sight (LOS) communications can be
maintained between the devices. The FCC has limited the power output of IEEE 802.11b radio
transmissions to a maximum of 1-watt peak power or not more than +36dB signal strength with any given
omni-directional antenna. Most commercial-off-the-shelve (COTS) IEEE 802.11b equipment operates at
power levels well below the FCC specification. Northrop Grumman IT has designed an Extended Range
(Amplified) WLAN System that takes advantage of the FCC power limits by installing an amplifier
within the system to achieve maximum range and quality of communications between the mobile units
and fixed sites. The Extended Range (Amplified) WLAN Systems that we will be using have been
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certified for compliance with Part 15 of FCC regulations and are authorized for use with the proposed
wireless network. Nevertheless, it will be important to bear in mind that communication quality will
largely depend on the ability to maintain clear LOS between the elements comprising the network.
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