Motorola GP344 Detailed Service Manual

EMEA Publications Department, Jays Close, Viables Industrial Estate, Basingstoke, Hampshire, RG22 4PD, UK.
Issue : July 2007
iii
Compact Professional
Portable Radios
Detailed Service Manual
6864115B63-C
Contents
Section 1 Service Maintainability
Section 2 Power Distribution, Controller and Keypad Service Information
Section 3 VHF Service Information
Section 4 UHF1 Service Information
Section 5 UHF2 Service Information

Motorola GP344 Specifications

General

power supply	7.5 V
power VHF	1-5 W
power UHF 1	1-4 W
power UHF 2	1-4 W
average battery life with standard Li-lon battery (low power)	>9 hours
average battery life with standard Li-lon battery (high power)	>7 hours
average battery life with high capacity Li-lon battery (low power)	>13 hours
average battery life with high capacity Li-lon battery (high power)	>10 hours
operating temperature	-20°C to +55°C
frequencies VHF	136-174 MHz
frequencies UHF 1	403-470 MHz
frequencies UHF 2	450-527 MHz
channel spacing	12.5/20/25 kHz
frequency stability	±2.5 ppm
modulation limiting @ 12.5 kHz	±2.5
modulation limiting @ 20 kHz	±4.0
modulation limiting @ 25 kHz	±5.0
FM hum & noise	-40 dB typical
conducted/radiated emission <1 GHz	-36 dBm
conducted/radiated emission >1 GHz	-30 dBm
audio response (300-3000Hz)	+1 to -3 dB
audio distortion	<5% typical
frequencies VHF	136-174 MHz
frequencies UHF 1	403-470 MHz
frequencies UHF 2	450-527 MHz
channel spacing	12.5/20/25 kHz
sensitivity (12 dB SINAD) EIA	0.35 µV typical
intermodulation EIA	-65 dB
adjacent channel selectivity @ 12.5 kHz	60 dB
adjacent channel selectivity @ 20/25 kHz	70 dB
spurious rejection	70 dB
rated audio	0.5W
audio response (300-3000 Hz)	+1 to -3 dB

Weight and Dimensions

dimensions with standard Li-lon battery	101.5 x 55.5 x 30.5 mm
dimensions with high capacity Li-lon battery	101.5 x 55.5 x 35.5 mm
weight with standard Li-lon battery	250 gm
weight with high capacity Li-lon battery	270 gm