You cannot wire a 3.5mm jack directly to a standard RS-232 serial port or a raw USB interface. The QYT KT-8900 communicates using .
: The radio is compatible with the official QYT KT-8900 software or the community-standard CHIRP .
: It is highly recommended to use a module with an FTDI or CP2102 chipset. Prolific chips (PL2303) found in many cheap cables often face driver compatibility issues on Windows 10/11.
Ensure the radio is ON before plugging in the cable, or turn it on after plugging it in, depending on the software requirement.
The QYT KT-8900 is a beloved staple among amateur radio operators seeking a compact, budget-friendly mobile transceiver. However, programming Chinese mobile radios can sometimes yield "Communication Port" errors.


