| | Pin / Conductor | Signal | Description | | ---------------------- | ------------------- | ------------------ | ------------------------------------------------- | | 3.5mm Mono Jack | Tip | CI-V Data (Single-wire bus) | Bi-directional data line at 5V TTL levels | | 3.5mm Mono Jack | Sleeve | Ground (GND) | Common ground reference |
Launch your logging or radio control software (e.g., N1MM Logger, Logger32, WSJT-X, fldigi, or wfview ). icom ci v usb interface schematic top
For a robust USB‑based CI‑V interface, you will need: | | Pin / Conductor | Signal |