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Last modified 2022-06-19

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Kenwood TM-231E

A picture of Kenwood TM-231E

SPECIFICATIONS

GENERAL
Type:Amateur VHF transceiver
Frequency range: Europe
TX: 144-146 MHz
RX: 144-146 MHz
Tuning steps:5 / 10 / 12.5 / 15 / 20 / 25 KHz
Frequency stability:10 ppm @ -20 to +60C (-4 to +140F)
Mode:FM
Channels / memory management: 20 regular
1 call
4 odd splits
1 priority
1 program scan pair
RAM storage with lithium battery backup
Repeater shift / offset:600 KHz
Power supply:13.8 VDC 15%
Current drain / power consumption:RX: Max 600 mA
TX: Max 11 A
Antenna impedance / connector:50 ohm / SO-239 (On pigtail)
Dimensions (W*H*D):140*40*160 mm (5.51*1.58*6.3")
Weight:1.2 Kg (2.65 lb)
Other features:CTCSS/PL encoder. 1750 Hz repeater tone.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.7 MHz
2nd IF: 455 KHz
Sensitivity:0.16 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




TRANSMITTER SECTION
RF output power:

HighMidLow
2 m:50 W10 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:1989-199x (Discontinued)
Additional info:New price 1989 in Sweden: SEK 3890:-
Related documents:User manual (1.4 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
DRU-1
IF-20
MB-201
MC-44
MC-44DM
MC-44DME
MC-44E
MC-55
MC-60A
MC-80
MC-85
PG-2N
PG-3B
PG-4H
PG-4J
PS-50
PS-430
RC-10
RC-20
SP-41
SP-50B
SP-430
TSU-6
Digital recording unit
Interface unit
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
Interface connecting cable
Extension cable kit
Power supply. 13.8 VDC, 20 A
Power supply. 13.8 VDC, 10 A (20 A peak)
Remote controller / handset
Remote controller / panel
Mobile speaker. 4 ohm
Mobile speaker. 8 ohm
External speaker
CTCSS/PL decoder unit