RigPix logo

Kenwood/Trio logo


Back to main

Back to Kenwood/Trio

Next mobile VHF/UHF


Copyright logo


Last modified 2022-06-23

Valid HTML 4.01 Transitional

Kenwood TM-631A

A picture of Kenwood TM-631A

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)
Image rejection:
AF output power / speaker:2 W at 5% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power:

HighLow
2 m:50 W5 W
1.25 m:25 W5 W
Modulation system:Reactance modulation
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




MISCELLANEOUS
Manufactured:1990-199x (Discontinued)
Additional info:
Related documents: User manual (4.3 MB)
Service manual (13.2 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
MB-11
MC-44
MC-44DM
MC-44DME
MC-44E
MC-55
MC-60A
MC-80
MC-85
PG-2N
PG-3B
PS-50
PS-430
RC-10
SP-41
SP-50B
SP-430
TSU-6
Mobile mounting bracket
Multifunction microphone
Multifunction microphone with autopatch
Multifunction microphone with autopatch (Europe)
Multifunction microphone (Europe)
Mobile microphone
Desk microphone with up/down buttons
Omnidirectional desk microphone with up/down buttons
Unidirectional desk microphone with up/down buttons
DC power cable
DC line noise filter
Power supply. 13.8 VDC, 20 A
Power supply. 13.8 VDC, 10 A (20 A peak)
Remote controller / handset
Mobile speaker. 4 ohm
Mobile speaker. 8 ohm
External speaker
CTCSS/PL decoder unit