If you hear distortion on FM signals because the radio is 2-3 kHz off frequency, the manual provides the alignment procedure for the TCXO (Temperature Compensated Crystal Oscillator). Usually, it involves adjusting a variable capacitor or setting via the service menu.
The TYT TH-9800 service manual provides technical information such as schematics, component layouts, and alignment procedures that are not found in the standard user manual. Manual & Documentation Access Service Manual/Schematics:
Here are the safe, proven methods to find the :
