Qyt Kt8900 Programming Cable Pinout 📍

To interface with a PC, you need a USB-to-TTL serial adapter (e.g., CP2102, PL2303, FTDI). The adapter must output (the KT8900 works with both, but 5V is common). The wiring between the USB adapter and the 2.5mm plug is:

| Radio Model | K1 Connector Pinout | Works with QYT Cable? | | :--- | :--- | :--- | | | TX on 3.5mm Tip, RX on 2.5mm Ring | Yes (Reference) | | Baofeng UV-5R | TX on 2.5mm Ring, RX on 3.5mm Tip | No (Reverse lines) | | Kenwood TM-V71A | Uses RS-232 (via MAX232) | No (Voltage mismatch) | | Wouxun KG-UV920 | Same as QYT (TTL, reversed) | Yes (Works directly) | qyt kt8900 programming cable pinout

Ensure the 3.5mm plug is pushed all the way in . The KT-8900 casing can sometimes prevent a flush connection. To interface with a PC, you need a

The TTL circuit needs a common ground.

If you are building a cable from scratch using an Arduino or a USB-to-TTL adapter (e.g., FTDI FT232RL), use this mapping: | | :--- | :--- | :--- | | | TX on 3