However, for alignment menus and voltage references, you must have the TYT-specific document.
Using this, you can recalibrate your frequency accuracy without an expensive service monitor (you still need a frequency counter). Tyt Th-9800 Service Manual Pdf
While illegal in most jurisdictions for transmit, hobbyists sometimes need to "MARS/CAP mod" the radio to receive out-of-band frequencies (like 60 MHz or 500 kHz marine weather). The service manual identifies the exact diode matrix or resistor link to remove or add. However, for alignment menus and voltage references, you
Sometimes the radio freezes on a boot loop. The service manual explains the hardware reset procedure (shorting specific pins on the CPU) that is not printed in the user manual. for alignment menus and voltage references