QYT KT-8900 Programming Cable Pinout
To program the KT-8900, you'll need to use software specifically designed for this radio, such as: qyt kt8900 programming cable pinout top
Early QYT KT8900 units (pre-2017) used a different pinout: Pin 2 was RX and Pin 3 was TX. Later revisions standardized to the pinout above (Pin 2 = TX). If you have an older radio, you may need to try the reversed pinout: QYT KT-8900 Programming Cable Pinout To program the
Unlike many other radios that use the microphone port, the QYT KT8900 family (including the Go to product viewer dialog for this item. Go to product viewer dialog for this item. RXD/TXD: TTL-level serial in many cables; some OEM
| Pin Number (Top view, tab up) | Signal | Wire Color (Typical in cheap cables) | Function | |-------------------------------|--------|--------------------------------------|-----------| | 1 | GND | Black or Bare Copper | Ground | | 2 | TX (Radio → PC) | White/Orange | Data from radio to computer | | 3 | RX (PC → Radio) | Orange | Data from computer to radio | | 4 | NC | Not connected | No connection | | 5 | NC | Not connected | No connection | | 6 | +5V (VCC) | Red | Power for USB-to-TTL converter | | 7 | NC | Not connected | No connection | | 8 | RTS (optional) | Blue or Green | Request to Send (rarely used) |
pins are often relevant for building repeater controllers or custom mics. Looking at the front of the radio, pin 1 is on the left: Chassis Ground PTT (Push-to-Talk) Mic Ground / Shield Microphone Audio RX Audio (Fixed level) Tips for DIY Cables Adapter Type