Over time, components drift out of calibration. This section explains how to connect the radio to a service monitor (like an Aeroflex or HP/Agilent analyzer) to measure and adjust: Reference oscillator frequency. Transmitter power output levels. Modulation limiting and deviation. Receiver sensitivity (SINAD). Schematics, Circuit Descriptions, and Parts Lists
This section explains how the radio works, breaking down the signal path. It is usually divided into two main paths: motorola gm3688 service manual top
Test the power control circuit and exciter stage, often found on the top side. Obtaining the Official Manual Over time, components drift out of calibration