There are many variants of transceivers labeled as or related to “uSDX”. These radios use different connections. For some of them there are store cables [1, 2], for others there are no pre-made cables available in store at this time.
The radios in the pictures below will need homebrew cables:
According to the information in the manuals the pinout for the mic connector looks like this:
Would love to hear the logic behind the decision to use ring 1 for ground connection. Anyway, based on this pinout the audio cable to Digirig will look like this:
3.5mm TRRS tip (MIC) → 3.5mm TRRS ring 1 (RIG_AFIN)
3.5mm TRRS ring 1 (GND) → 3.5mm TRRS sleeve (GND)
3.5mm TRRS ring 2 (PTT) → 3.5mm TRRS ring 2 (RIG_PTT)
3.5mm TRRS sleeve (SPK) → 3.5mm TRRS tip (RIG_AFOUT)
Please report your results if you end up building the cable.
I have the red corners, I will build the cable the next days. I have a standard digirig, it will work with the cable configuración?
73s from Costa Rica
This is an update, I follow your instructions and I was able to make the cable to work with the Digirig, Indeed, I was able to make 1 contact ( solar storms are affecting propagation) I’m attaching some pictures here as a proof that is working.
Congrats on the successful cable build!
In your WSJT-X settings you can change PTT method to RTS over Digirig’s COM port. It’s more reliable than VOX. I look forward to seeing your video.
