Motorola GM328

Technical Specifications 1-3
Transmitter UHF
*Frequencies - Full Bandsplit UHF 450-527 MHz
Channel Spacing 12.5/20/25 kHz
Frequency Stability
(-30°C to +60°C, +25° Ref.)
±2.0 ppm
Power 1-25W
Modulation Limiting
±2.5 @ 12.5 kHz
±4.0 @ 20 kHz
±5.0 @ 25 kHz
FM Hum & Noise
-40 dB @ 12.5kHz
-45 dB @ 20/25kHz
Conducted/Radiated Emission (ETS)
-36 dBm <1 GHz
-30 dBm >1 GHz
Adjacent Channel Power
-60 dB @ 12.5 kHz
-70 dB @ 25 kHz
Audio Response (300 - 3000 Hz) +1 to -3 dB
Audio Distortion @1000Hz, 60%
Rated Maximum Deviation
<3% typical
Receiver UHF
*Frequencies - Full Bandsplit UHF 450-527 MHz
Channel Spacing 12.5/20/25 kHz
Sensitivity (12 dB SINAD) 0.30 µV (0.22 µV typical)
Intermodulation (ETS)
>65 dB
Base Mode: >70dB
(1-25W model only)
Adjacent Channel Selectivity (ETS)
65 dB @ 12.5 kHz
70 dB @ 20 kHz
75 dB @ 25 kHz
Spurious Rejection (ETS)
70 dB @ 12.5 kHz
75 dB @ 20/25 kHz
Rated Audio
3W Internal
13W External
Audio Distortion @ Rated Audio <3% typical
Hum & Noise
-40 dB @ 12.5 kHz
-45 dB @ 20/25 kHz