Wln Kd-c1 Usb Driver Jun 2026

| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | "Access denied" error in software | Another app is using the COM port | Close CHIRP, WLN software, or any terminal monitor | | Driver installs but radio times out | Wrong COM port selected | Check Device Manager – match COM number exactly | | Code 10 error (cannot start device) | Counterfeit Prolific chip | Uninstall driver, install from Prolific's archive | | Works once, then fails | Windows auto-updated the driver | Roll back driver via Device Manager |

Unlike older radios that require a fixed baud rate (e.g., 9600 or 19200), the WLN KD-C1 driver supports auto-negotiation. This allows the programming software to communicate at speeds up to , making channel dumps and uploads nearly instantaneous. wln kd-c1 usb driver