Source: rigpix
Transceivers
Updated: 09/02/2026
Kenwood TM-631A
Confidence score: 50%
Estimated value
281€
Theoretical estimate
259€
Minimum
304€
Maximum
Specifications
GENERAL
- Type
- Amateur VHF transceiver
- Frequency range
- USA TX: 144-148 / 220-225 MHz RX: 136-174 / 215-230 MHz
- Tuning steps
- 5 / 10 / 12.5 / 15 / 20 / 25 KHz
- Frequency stability
- ±? ppm
- Mode
- FM
- Channels / memory management
- 14 regular 2 scan edge 2 odd split 1 call RAM storage with lithium battery backup
- Repeater shift / offset
- 2 m: ±600 KHz 1.25 m: 1.6 MHz
- Power supply
- 13.8 VDC ±15%
- Current drain / power consumption
- RX: Less than 600 mA (No signal) TX: Less than 11 A
- Antenna impedance / connector
- 50 ohm / Two SO-239 (On pigtails)
- Dimensions (W*H*D)
- 150*50*219 mm (5.9*2*8.6")
- Weight
- 1.8 Kg (3.97 lb)
- Other features
- CTCSS/PL encoder. Twin RX.
RECEIVER SECTION
- Receiver system
- Double conversion superheterodyne 1st IF: 30.825 MHz 2nd IF: 455 KHz
- Sensitivity
- 2 m: 0.2 uV (12 dB SINAD) 1.25 m: 0.18 uV (12 dB SINAD)
- Selectivity
- 12 KHz (-6 dB) 24 KHz (-60 dB)
- AF output power / speaker
- 2 W at 5% distortion / 8 ohm
- External speaker connector
- 3.5 mm, 8 ohm
TRANSMITTER SECTION
- Modulation system
- Reactance modulation
- Max FM deviation (Factory set)
- ±5 KHz
- Spurious emissions
- Better than -60 dB
- Microphone impedance / connector
- 500-600 ohm / 8-pin (Metal locking ring connector)
- Microphone input level
- ? mV
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