Motorola GM360 Service Information

1-2 overview
3.0 GM380/GM1280 Models (GCN6121_)
The Controlhead contains the on/off/volume knob, the microphone connector, several buttons to
operate the radio, several indicator Light Emitting Diodes (LED) to inform the user about the radio
status, and a Liquid Crystal Display (LCD) with 21 pre - defined symbols and a 32*96 dot matrix for
graphical or alpha - numerical information e.g. channel number, select code, call address name. To
control the LED’s and the LCD, and to communicate with the host radio the control head uses the
Motorola 68HC11K4 microprocessor.

Motorola GM360 Specifications

General

Power Output	1-25 W (VHF), 1-25 W (UHF)
Signaling	MDC1200, Quick Call II, DTMF
Channel Spacing	12.5/20/25 kHz
Frequency Range	403-470 MHz
Display	Alphanumeric
Battery Life	Not applicable (mobile radio)