JVCKENWOOD 35583120 UHF FM Transceiver User Manual INSTALLATION
JVC KENWOOD Corporation UHF FM Transceiver INSTALLATION
Manual
TKR-851-2 FCC ID: K4435583120 
INSTRUCTION MANUAL 
TKR-851-2 
THANK YOU! 
We are grateful you purchased this KENWOOD repeater.    We believe this easy-to-program repeater will be highly 
effective in your communications system, and will keep personnel operating at peak efficiency. 
KENWOOD incorporates the latest in advanced technology into all of our products. As a result, we feel strongly that 
you will be pleased with the quality and features of this product. 
FEATURES 
• You can easily program channel data using the KPG-91D software on a PC. 
• You can recall 1 of 16 preset channels using either a PF key or the external control line. 
• The firmware can be written to the Flash memory through an external source. 
• QT/DQT signalling can be programmed on each channel. It simultaneously decodes up to 16 different QT/DQT 
tones. 
• Air Remote Control Function. 
• The interface port can be used with external equipment, such as a repeater controller. 
• The repeater has multi-mode capability.   
Wide: 30 kHz /  Narrow: 15 kHz  (TKR-751; K type only) 
Wide: 25 kHz/  Narrow: 12.5 kHz  (TKR-751/TKR-851) 
• You can adjust the following functions from a PC: 
• Squelch 
• RX Audio Signal Output (RA) 
• RX Detector Signal Output (RD) 
• RX Frequency 
• RF Output Power 
• Maximum Deviation 
• TX Audio Input (TA) 
• Signaling Deviation (TD) 
• DQT Balance 
• QT Deviation 
• DQT Deviation 
• Test Tone Deviation 
• CW ID Deviation 
• Repeat Gain 
• TX Frequency 
• DTMF Deviation 
• Courtesy Tone Deviation 
• Battery Operating Tone Deviation 
• Battery Warning Tone Deviation 
• Power Down Detect 
• 5 Tone Deviation (M type only) 

TKR-851-2 FCC ID: K4435583120 
PRECAUTIONS 
• Do not expose the unit to rain or moisture; to prevent fire or electric shock. 
• Do not open the unit under any circumstances; to avoid risk of electric shock. 
• Do not expose the unit to long periods of direct sunlight, nor place it close to heating appliances. 
• Do not place the unit in excessively dusty and/or humid areas, nor on unstable surfaces. 
• If you detect an abnormal odor or smoke coming from the unit, disconnect the power from the unit immediately. 
Contact your KENWOOD service center or dealer. 
NOTICES TO THE USER 
UNPACKING AND CHECKING EQUIPMENT 
Note: The following unpacking information is for use by your KENWOOD dealer, an authorized KENWOOD service 
facility, or the factory. 
Carefully unpack the repeater. We recommend that you identify the items listed in the following table before discarding 
the packing material. If any items are missing or have been damaged during shipment, file a claim with the carrier 
immediately. 
Item Part Number Quantity 
Hardware fixture  J21-8402-#4  1 
Front Glass  B10-2635-#4  1 
Filter B11-1259-#4 1 
Cushion G13-1801-#4 4 
Cushion G13-1802-#4 4 
Foot J02-0475-#5 2 
Foot J02-0492-#4 2 
Grommet J59-0302-#5 2 
Handle K01-0418-#5 1 
Screw N30-4006-46 2 
Screw N35-3006-45 5 
DC Cord  E30-3427-#5  1 
Connector Cable  E31-3228-#5  1 
Fuse F06-1032-#5 1 
Instruction Manual  B62-1775-##  1 
Warranty Card    1 
FCC WARNING 
This equipment generates or uses radio frequency energy. Changes or modifications to this equipment may 
cause harmful interference unless the modifications are expressly approved in the instruction manual. The user 
could lose the authority to operate this equipment if an unauthorized change or modification is made. 
**    GOVERNMENT LAW PROHIBITS THE OPERATION OF UNLICENSED RADIO TRANSMITTERS 
WITHIN THE TERRITORIES UNDER GOVERNMENT CONTROL. 
**    ILLEGAL OPERATION IS PUNISHABLE BY FINE OR IMPRISONMENT OR BOTH. 
**    REFER SERVICE TO QUALIFIED TECHNICIANS ONLY. 
CAUTION:  This repeater is intended for use as a fixed base station with the antenna located outdoors on the 
rooftop or on antenna tower. 

TKR-851-2 FCC ID: K4435583120 
INSTALLATION 
To install the handles onto the front panel of the repeater, align the handles with the holes on the front panel, then 
secure the handles using the supplied screws. 
Please consult your dealer for installing the repeater and antenna.   
MICROPHONE 
Connect an optional KMC-30, KMC-27A, KMC-27B, or KMC-9C KENWOOD microphone to the MIC jack on the front 
panel.  
CONTROLS AND FUNCTIONS 
** Front Panel 
1  Speaker 
2  CH/STATUS Display 
Two, 7-segment digits display the channel 
number or status. 
3  VOLUME control 
Rotate to adjust the volume. 
4  DC SOURCE switch 
5  Power indicator 
Lights green when power is applied from the DC 
13.6V jack. Lights red when power is applied from 
the BACKUP battery terminal. 
6  Mic jack 
Connect a microphone to this 8-pin modular jack. 
7  Programmable Function keys 
Press these keys to activate their programmable 
functions. 
8  BUSY indicator 
Lights green while a signal is being received. 
9  TX indicator 
Lights red while transmitting. 
** Rear Panel 
1  TX OUT jack 
Connect a TX antenna or a duplexer ti this receptacle. 
2  CONTROL I/O jack 
Connect an external programming device or repeater 
controller to this DB-25 interface. 
3  FUSE 
Insert 10 A blade fuses into these fuse holders. 
4  RX IN jack 
Connect a RX antenna or a duplexer to this BNC 
receptacle. 
5  DC 13.6V jack 
Connect a 13.6 V DC power supply to this jack. 
6  BACKUP battery terminal 
7  TEST/SPKR jack 
Test input/output jack. Connect an external speaker to 
this jack.
TKR-851-2 FCC ID: K4435583120 
REPEATER OPERA TION 
Note: Please consult your dealer for programming the repeater. 
When power is applied to the unit, the POWER indicator lights. 
• Green when using the main DC jack. 
• Red when using the Backup terminal. 
Rotate the VOLUME control to adjust the volume. 
The BUSY indicator lights green while receiving a signal and the TX indicator lights red while transmitting. 
TRANSCEIVER OPERA TION 
** Receive 
Adjust the volume to your desired level. You may need to readjust the volume when you receive a 
message from your dispatcher or another member in your fleet. 
• The BUSY indicator lights green while a signal is being received. 
** Transmit 
1 Listen to the channel before transmitting, to make sure it is not being used. 
2 Press the microphone PTT switch, then speak in your normal speaking voice. 
• The TX indicator lights red while transmitting. 
3 When you finish speaking, release the PTT switch. 

MANDATORY SAFETY INSTRUCTIONS TO INSTALLERS AND USERS 
• Use only manufacturer or dealer supplied antenna. 
• Antenna Minimum Safe Distance: 120 cm (4 feet), 50% duty Cycle. 
• Antenna Gain: 0 dBd referenced to a dipole. 
The Federal Communications Commission has adopted a safety standard for human 
exposure to RF (Radio Frequency) energy which is below the OSHA (Occupational Safety 
and Health Act) limits. 
• Antenna Mounting: The antenna supplied by the manufacturer or radio dealer must not be 
mounted at a location such that during radio transmission, any person or persons can 
come closer than the above indicated minimum safe distance to the antenna, i.e. 120 cm 
(4 feet) , 50% duty Cycle. 
• To comply with current FCC RF Exposure limits, the antenna must be installed at or 
exceeding the minimum safe distance shown above, and in accordance with the 
requirements of the antenna manufacturer or supplier. 
• Vehicle installation: The antenna can be mounted at the center of a vehicle metal roof or 
trunk lid, if the minimum safe distance is observed. 
• Base Station Installation: The antenna should be fixed-mounted on an outdoor permanent 
structure. RF Exposure compliance must be addressed at the time of installation. 
Antenna substitution: Do not substitute any antenna for the one supplied or recommended 
by the manufacturer or radio dealer. 
You may be exposing person or persons to excess radio frequency radiation. You may 
contact your radio dealer or the manufacturer for further instructions. 
 Maintain a separation distance from the antenna to person(s) of at least 
120 cm (4 feet) , 50% duty Cycle. 
You, as the qualified end-user of this radio device must control the exposure conditions of 
bystanders to ensure the minimum separation distance (above) is maintained between the 
antenna and nearby persons for satisfying RF Exposure compliance. The operation of this 
transmitter must satisfy the requirements of Occupational/Controlled Exposure 
Environment, for work-related use, transmit only when person(s) are at least the minimum 
distance from the properly installed, externally mounted antenna. Transmit only when 
people outside the vehicle are at least the recommended minimum lateral distance away 
from the antenna/vehicle