For further information on the QYT KT8900 programming cable pinout and radio settings, here are some additional resources:
Inside the programming cable, the two plugs are wired to a (often a Prolific PL2303 or CH340 chip): qyt kt8900 programming cable pinout top
: Open Windows Device Manager. Expand Ports (COM & LPT) . Verify the COM port number assigned to your USB chip matches the port selected inside CHIRP. For further information on the QYT KT8900 programming
Before building a cable, it's crucial to understand the different ports on the radio and which ones to use for programming. The radio uses 3.5mm jacks for programming, not the microphone port. Here's a breakdown: Before building a cable, it's crucial to understand
When building or purchasing a programming cable, ensure that the wiring matches the pinout above. A straight-through cable with a 6-pin or 8-pin mini-jack connector on one end and a compatible connector (e.g., DB-9 or USB) on the other end is typically used.
| Pin Number | Signal Name | Wire Color (Typical in OEM Cable) | Function | | :---: | :---: | :---: | :---: | | | NC / GND | Black | Not connected in programming mode (ground on some versions) | | Pin 2 | SPK- (Speaker -) | Yellow | Negative speaker line (not used for programming) | | Pin 3 | MIC / TXD | Blue | Programming Transmit Data (Radio → PC) | | Pin 4 | PTT | Green | Not used during programming | | Pin 5 | GND | Brown | System Ground (critical for programming) | | Pin 6 | RXD | Red | Programming Receive Data (PC → Radio) | | Pin 7 | VCC / 5V | Orange | +5V power from radio (only active when radio is ON) | | Pin 8 | SPK+ (Speaker +) | White | Positive speaker line (not used for programming) |
It's essential to note that the pinout may vary depending on the specific cable and radio model. Therefore, it's recommended to verify the pinout for your specific QYT KT8900 radio and programming cable.