• TKR-851E

UHF Repeater - Low Power 

Key Features 

Frequency Range: 440-470 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, French, Italian, German & Dutch

Screw Set Yes

PMR General Features 

5-Tone Signalling (multi-format) Yes

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 

5-Tone Selective Call Yes

5-Tone/DTMF Over-The-Air Remote Control and Reporting Yes

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

"Community Repeater" Ready 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

Repeater Open/Close Yes

Sel-Call and Status Call Yes

Time-Out Timer Yes

Windows Programming and Tuning Software Yes

PMR Construction Features 

Front Mounted Speaker Yes

Accessory Features 

Current drain Standby (Power Save): 0.3 A 

Receive: 1.2 A 

Transmit/Receive: ≤ 8 A

Applicable Standards 

R&TTE: EN300 086-2 Yes

EN300 113-2 Yes

EN300 219-2 Yes

EN301 489-5 Yes

EU Safety: EN60065 Yes

EU Safety: EN60215 Yes

EU Safety: EN60950 Yes

Measurement - EN Standards Yes

Technical Specifications  

Frequency Range - E Type 440-470 MHz

Frequency Range - E3 Type 400-430 MHz

Number of Channels 16

Channel Spacing Wide: 25 kHz 

Mid: 20 kHz (only "E Type") 

Narrow: 12.5 kHz

5-Tone Standard EEA, ZVEI, CCIR, ZVEI-2, EIA, Kenwood proprietary

Antenna Impedance - 50 Ohm Yes

Antenna Connector RX: BNC TX: N

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 13.2 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 

80 dB at 20 kHz (only "E Type") 

75 dB at 12.5 kHz

Audio Output 4 W with less than 5% distortion

Circuitry - Double Conversion Superheterodyne Yes

Intermodulation 72 dB

Sensitivity - EN 20 dB SINAD 0.45 µV

Spurious Reponse Rejection (Analogue) 90 dB

Transmitter Specifications 

RF Power Output 1 W to 25 W

Microphone Impedance 600 Ohm

Modulation Distortion Less than 3%

Modulation Limiting ± 5 kHz at 25 kHz 

± 4 kHz at 20 kHz (only "E Type") 

± 2.5 kHz at 12.5 kHz

Spurious Emission (EN) -36 dBm ≤ 1 GHz 

-30 dBm > 1 GHz


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

Tags: Analogue, Licensed, Repeaters