Kenwood TKR-751/851

FM analogue repeater
  • 16 Duplex or Simplex Channels
  • Low Power version - 1 to 25 watts output
  • 6 x Programmable Function Keys
  • LED Display and Indicators
  • Power Saving
  • LED Display and Indicators


PMR Construction Features


Applicable Standards


Technical Specifications

Frequency Range - E Type 146-174 MHz
Number of Channels 16
Channel Spacing Wide: 25 kHz
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 ± 2 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 2.5 kHz/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 85 dB at 25 kHz 
82 dB at 20 kHz 
77 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 
± 2.5 kHz at 12.5 kHz
Spurious Emission (EN) -36 dBm ≤ 1 GHz 
-30 dBm > 1 GHz
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