Qyt Kt8900 Programming Cable Pinout Top

If you are recycling an old USB-to-TTL adapter board or repairing an existing cable, use the following wiring scheme to connect your module to the 3.5mm TRRS connector: USB-to-TTL Module Pin 3.5mm TRRS Component (Transmit) Tip Carries data to the radio's RX circuit RXD (Receive) Ring 1 Carries data from the radio's TX circuit GND (Ground) Sleeve Common ground reference

Pins:

The accessory port on the KT-8900 is recessed. A standard audio cable might fit, but a programming cable often has a specific molding. Ensure the cable is inserted and firmly. Even a millimeter of gap can disconnect the data line (usually the Tip or first Ring). qyt kt8900 programming cable pinout top