The WiMo Digi-1 sound‑card interface adapts audio levels, provides galvanic isolation and PTT/CW control for amateur radio transceivers, with setup…
The Digi-1 is a compact sound‑card interface housed in an anodized aluminum case. It connects a transceiver to a PC sound card, matching line‑in and microphone levels, isolating the two devices, and offering optional PTT and CW control via optocouplers. The package includes a microphone‑adapter cable, audio and Sub‑D cables, jumper sets and demo software.
The manual explains the functional principle, wiring diagrams, jumper configuration, and step‑by‑step installation. It also covers practical experience, troubleshooting of ground loops, and how to fine‑tune the two internal trim pots for optimal signal‑to‑noise ratio. This manual is written in German.
| Weight | ≈ 200 g |
|---|---|
| Power supply | None required |
| Trim pots | Two internal trim pots for fine level adjustment |
| Isolation transformer ratio | 3 : 1 |
No, the Digi-1 operates without any external power supply.
Two potentiometers inside the Digi-1 allow independent adjustment of the transmit and receive audio levels.
The transceiver’s NF output is linked to the sound‑card line‑in, and the sound‑card line‑out (or microphone input) is fed to the transceiver’s microphone input, with level matching and isolation performed by the Digi‑1.