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Please note that ATCM / CEP circulars are available only to specific contact points.
Last updated: October 2025. Compatible with QYT KT8900, KT8900D, and KT8900R. For the KT-8W or KT-UV980, refer to a different pinout guide.
Note: In serial communication, the computer's Transmit (TX) connects to the radio's Receive (RX), and vice versa. Important Usage Tips
Due to the recessed lip on the KT-8900 rear frame, the plug often feels fully inserted when it is actually 1mm short of establishing a solid TX/RX connection. Give it a firm push or trim back a small amount of plastic shielding from the connector collar.
If you have a pre-made cable that stopped working, use the to probe with a multimeter:
Please note that ATCM / CEP circulars are available only to specific contact points.
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Last updated: October 2025. Compatible with QYT KT8900, KT8900D, and KT8900R. For the KT-8W or KT-UV980, refer to a different pinout guide.
Note: In serial communication, the computer's Transmit (TX) connects to the radio's Receive (RX), and vice versa. Important Usage Tips qyt kt8900 programming cable pinout top
Due to the recessed lip on the KT-8900 rear frame, the plug often feels fully inserted when it is actually 1mm short of establishing a solid TX/RX connection. Give it a firm push or trim back a small amount of plastic shielding from the connector collar. Last updated: October 2025
If you have a pre-made cable that stopped working, use the to probe with a multimeter: qyt kt8900 programming cable pinout top