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Last modified 2026-05-07

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Motorola GM-350

A picture of Motorola GM-350 128 channel display model

SPECIFICATIONS

GENERAL
Type:Professional land mobile VHF or UHF transceiver
Frequency range
depending on version:
66-88 MHz
136-174 MHz
300-345 MHz
403-470 MHz

See also the model chart
Tuning steps:Channelized (Programmable in 12.5 / 20 / 25 KHz increments)
Frequency stability:±2 ppm @ -25 to +55°C (-13 to +131°F)
Mode:FM
Channels / memory management: 4 regular (Non-display version)
128 regular (Display version)
Duplex shift / offset:Programmable
Power supply:10.8-15.6 VDC
Current drain / power consumption:RX: ? mA
TX: ? A
Antenna impedance / connector:50 ohm / BNC
Dimensions (W*H*D):168*44*180 mm (6.61*1.73*7.09")
Weight:1.03 Kg (2.27 lb)
Other features:CTCSS/PL & DCS. Scrambler option.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 21.4 MHz (VHF Low "Midband") - 45.1 MHz (VHF High and UHF)
2nd IF: 455 KHz
Sensitivity:0.35 uV (12 dB SINAD)
Squelch sensitivity:
Selectivity:60 dB (Adjacent channel @ 12.5 KHz)
70 dB (Adjacent channel @ 20 / 25 KHz)
Image rejection:70 dB
AF output power / speaker:4 W at 5% distortion / ? ohm
External speaker connector:




TRANSMITTER SECTION
RF output power: High: 25 W
Low: 5 W
Modulation system:
Max FM deviation (Factory set):±2.5 / 4 / 5 KHz (Depending on programming)
Spurious emissions:Better than -0.25 uW
Microphone impedance / connector:? ohm / 8-pin (Modular)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Malaysia and other, 199x-200x (Discontinued)
Additional info:
Related documents: User manual (74 KB)
Service manual (859 KB)
Modifications and fixes:
Reviews:
Options / Accessories:
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A picture of Motorola GM-350 4 channel non-display model