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Last modified 2022-06-25

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Kenwood TM-642A

A picture of Kenwood TM-642A

SPECIFICATIONS

GENERAL
Type:Amateur VHF (UHF) transceiver
Frequency range: USA and Canada
TX: 144-148 / 220-225 MHz
RX: 144-148 / 220-225 MHz
Band options
10 m, 6 m, 70 cm or 23 cm
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: 100 regular per band (Can store odd splits)
1 call per band
RAM storage with lithium backup battery
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 1.2 A
TX: Less than 11.5 A
Antenna impedance / connector:50 ohm / ? (On pigtails)
Dimensions (W*H*D):150*50*175 mm (5.9*1.97*6.89")
Weight:1.5 Kg (3.31 lb), without optional band unit
Other features: CTCSS/PL encoder. DTMF. DTSS. Alarm clock with timer and stopwatch. Dimmer.
Crossband repeater. Twin RX (Triple RX with optional band module)




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.7 MHz (2 m) - 30.825 MHz (1.25 m)
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, 8 ohm




TRANSMITTER SECTION
RF output power:

HighLow 3Low 2
2 m:50 W10 W5 W
1.25 m:25 W10 W5 W
Modulation system:Reactance modulation
FM deviation (Factory set):5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:600 ohm / 8-pin (Modular)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:199x-199x (Discontinued)
Additional info:
Related documents:User manual (3.6 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
DFK-3
DFK-4
DFK-7
MB-14
MC-44
MC-44DM
MC-44DME
MC-44E
MJ-88
MJ-89
PG-3B
PG-3G
PS-33
SP-41
SP-50B
TSU-7
UT-28S
UT-50S
UT-440S
UT-1200
Detachable front panel mounting kit. 3 m (? ft)
Detachable front panel mounting kit. 4 m (? ft)
Detachable front panel mounting kit. 7 m (? ft)
Mobile mounting bracket
Multifunction microphone
Multifunction microphone with autopatch
Multifunction microphone with autopatch (Europe)
Multifunction microphone (Europe)
Modular to 8-pin microphone adapter
Modular plug microphone switch
Noise filter power cable
DC cable
Power supply. 13.8 VDC, 20.5 A
Mobile speaker
Communications speaker
CTCSS/PL decoder unit
10 m / 50 W band unit
6 m / 50 W band unit
70 cm / 35 W band unit
23 cm / 10 W band unit