• TKR-851K2

UHF Repeater - Low Power 

Key Features 

Frequency Range: 480-512 MHz

16 Full-Duplex Channels & Single Priority Scan

Variable RF Output - 1 W to 25 W

Windows Programming & Tuning Software

External Control I/O via D-Sub Connector

Battery Back-Up System

Flash Memory For Firmware/System Upgrades

Durable Die-Cast Chassis Construction

Supplied With 

Cushion Yes

D.C. Cable Yes, 4m long

Foot Yes, 4 pcs

Front Glass Yes

Fuse Yes, 10A

Handle Yes

Hardware Fixture Yes

Instruction Manual Yes, English & Spanish

Screw Set Yes

PMR General Features 

Character Display (Numeric) 2 Characters

Compact Design Yes

Companded Audio Yes

DB-25 Accessory Connector Yes

DTMF Function Yes

Ease of Operating Use Yes

Embedded Message Yes

Kenwood ESN (Electronic Serial Number) Yes

Programmable Function Keys 6 Programmable Function Keys


QT (CTCSS) / DQT (digital) Yes

RSSI Level Indicator Yes

Scan Yes

SelCall Function Yes

Time-Out Timer Yes

Transceiver Password Yes

Windows PC Programming and Tuning Yes

Base Station & Repeater Features 

19" Rack Mount Design Yes

Backup Power Features with Warnings Yes

"Base Station" or "Repeater" Mode Operation Yes

Base Station Features Yes

Conventional or Trunked System Use Yes


Flash ROM for Future Upgrades Yes

Front Mounted Speaker Yes

Full-Duplex Operation Yes

LED Display & Indicators Yes

Programmable Features - 6 PF keys, 2 x LEDs, volume knob, speaker and tones Yes

Repeater Features Yes

Time-Out Timer Yes

Windows Programming and Tuning Software Yes

PMR Construction Features 

Front Mounted Speaker Yes

Applicable Standards 

FCC Yes, Parts 90 & 90.210

Measurement - EIA Standards Yes

Technical Specifications 

Frequency Range - K2 Type 480 - 512 MHz

Number of Channels 16

Channel Spacing Wide: 25 kHz

Narrow: 12.5 kHz

Antenna Impedance - 50 Ohm Yes

Antenna Connector RX: BNC TX: N

Current Drain Stand-By: 0.8 A

Receive: 1.2 A 

Transmit: 13.0 A

CW ID Variable speed/tone frequency/modulation

CW Message 8 x 32 characters max.

Duty Cycle Receive: 100% 

Transmit: 100%

Frequency Stability ± 1.5 ppm (-30 °C to + 60 °C)

Operating Modes FM

Operating Temperature Range -30 °C to + 60 °C

Operating Voltage 13.6 V DC ± 15% Negative Ground

PLL Channel Steps 5.0 kHz/6.25 kHz

Repeater Hold Time From "Off" to 10 seconds

Test Tone Variable modulation/frequency

Dimensions 483 x 88 x 340 mm

Weight (net) 9.7 kg

Receiver Specifications 

Adjacent Channel Selectivity 83 dB at 25 kHz

75 dB at 12.5 kHz

Audio Output 4 W with less than 5% distortion

Circuitry - Double Conversion Superheterodyne Yes

FM Hum & Noise Wide/Narrow = 50/45 dB

Intermodulation 78 dB at 25, 50 kHz

75 dB at 12.5, 25 kHz

Sensitivity - EIA 12 dB SINAD 0.35 µV 

0.45 µV at 20 dB Quieting

Spurious Reponse Rejection (Analogue) 90 dB

Transmitter Specifications 

RF Power Output 1 W to 25 W

FM Hum & Noise Wide/Narrow = 50/45 dB

Microphone Impedance 600 Ohm

Modulation Distortion Less than 3%

Modulation Limiting ± 5 kHz at 25 kHz

± 2.5 kHz at 12.5 kHz

Spurious Response (EIA) 80 dB


  • Product Code: TKR-851K2
  • Availability: In Stock

Tags: Analogue, Licensed, Repeaters