Qyt Kt8900 Programming Cable Pinout Top !!install!! -

| USB-to-TTL Adapter | → | RJ-45 Pin (Top/Radio) | |--------------------|----|----------------------| | GND | → | Pin 3 | | TX (from adapter) | → | Pin 5 (Radio RX) | | RX (to adapter) | → | Pin 4 (Radio TX) |

QYT KT-8900 Go to product viewer dialog for this item. programming cable utilizes a standard or TRRS (Tip-Ring-Ring-Sleeve) audio jack interface, though only three connections are required for data transfer. The pinout typically follows the standard found in many similar Chinese mobile radios. Programming Cable Pinout (3.5mm Jack) qyt kt8900 programming cable pinout top

[1] GND [2] TX [3] RX [6] +5V Locking tab up. Pin 1 left. | USB-to-TTL Adapter | → | RJ-45 Pin

Solder a wire from the of the plug to the RXD (Receive) pin on the board. Programming Cable Pinout (3

An FTDI Friend or a CP2102 UART module is highly recommended. (Avoid cheap Prolific chips as they frequently trigger driver errors in Windows 10 and Windows 11).

Programming requires TTL levels (3.3V or 5V) ; do not connect a direct RS-232 serial cable as it can damage the radio.