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Last modified 2022-06-25

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Kenwood TM-742A

A picture of Kenwood TM-742A

SPECIFICATIONS

GENERAL
Type:Amateur VHF/UHF transceiver
Frequency range: USA and Canada
TX: 144-148 / 438-450 MHz
RX: 118-174 / 410-470 MHz
General market
TX: 144-148 / 430-440 MHz
RX: 118-174 / 410-470 MHz
Band options
10 m, 6 m, 1.25 m or 23 cm
Tuning steps:5 / 10 / 12.5 / 15 / 20 / 25 KHz
Frequency stability:10 ppm @ -20 to +60C (-4 to +140F)
Mode:TX: FM
RX: AM / 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
70 cm: 5 MHz
Power supply:13.8 VDC 15%
Current drain / power consumption:RX: Max 1.2 A
TX: Max 11.5 A
Antenna impedance / connector:50 ohm / One SO-239 and one N-jack (On pigtails)
Dimensions (W*H*D):150*50*175 mm (5.91*1.97*6.89")
Weight:1.5 Kg (3.31 lb)
Other features:CTCSS/PL encoder. Twin RX (Triple RX with optional band module).




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.695 MHz (2 m), 21.6 MHz (70 cm)
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:

HighMidLow
2 m:50 W10 W5 W
70 cm:35 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:Japan, 1995-199x (Discontinued)
Additional info:
Related documents: User manual (3.6 MB)
Service manual (10.5 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
DFK-3
DFK-4
DFK-5
MB-14
MC-45
MC-45DM
MC-45DME
MC-45E
MJ-88
MJ-89
PG-2N
PG-3B
PG-3G
PS-33
SP-41
SP-50B
TSU-7
UT-28S
UT-50S
UT-220S
UT-1200
Detachable front panel mounting kit. 3 m (9.8 ft)
Detachable front panel mounting kit. 4 m (13.12 ft)
Detachable front panel mounting kit. 5 m (16.4 ft)
Mobile mounting bracket
Multifunction hand microphone
Multifunction hand microphone with DTMF
Multifunction hand microphone with DTMF (Europe)
Multifunction hand microphone (Europe)
Modular to 8-pin microphone adapter
Modular plug microphone switch
DC cable
Noise filter power cable
DC line noise filter (High capacitance)
Power supply. 13.8 VDC, 20.5 A
Mobile speaker
Communications speaker
CTCSS/PL unit
10 m / 50 W band unit
6 m / 50 W band unit
1.25 m / 25 W band unit
23 cm / 10 W band unit