If the radio transmits but has low output power, the manual directs you to check the: Final PA (Power Amplifier) transistor. Low-pass filter assembly.
Navigate to the Transmitter Power Amplifier (PA) schematic section. motorola gm3688 service manual top
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: Procedures for aligning the radio's RF performance using a computer and tuning software. Key Features Covered motorola gm3688 service manual top