Easy Way to make K1 Connector to TRRS
Build an Easy DIY K1 Connector to TRRS Cable for Digirig Mobile, Digirig Lite, and Other Compatible Interfaces Using the Standard Pinouts.
All you need is a TRRS connector and a cable—either the hands-free kit that usually comes with the radio or, preferably, a fist mic cable, as it’s more durable and typically uses a coiled wire for added flexibility and strain relief.
Cut the fist mic cable and carefully strip the wires to prepare them for soldering to the TRRS connector. Use the following pinout reference to match the connections correctly:
TRRS to K1 (Baofeng/Kenwood Standard) Pinout
| TRRS Plug (3.5mm 4-pole) | Function | K1 Connector Pin (Radio Side) |
|---|---|---|
| Tip | Audio Out (Speaker) | 3.5mm Ring (top plug) |
| Ring 1 | Audio In (Mic) | 2.5mm Tip (bottom plug) |
| Ring 2 | PTT | 2.5mm Ring (bottom plug) |
| Sleeve | Ground | Both sleeve connections (shared GND) |
73’s
