Technicians are guided to inspect the RF power amplifier (PA) module and the antenna switch circuit.
Your GM3688 turns on and receives fine, but when you press the PTT, the TX light flashes, but no power comes out. The manual walks you through: motorola gm3688 service manual top
The official source for purchasing authorized technical documentation. Technicians are guided to inspect the RF power
This article explains why the is the top tool for technicians, how to use it effectively, and where to find legitimate versions. but when you press the PTT