Cables for Radioddity qb25

[KD4zWLE]

Any insights on premade cables and/or qb25’s usage for packet use (for a low cost rig on BPQ ports.)

[K0TX]

I’m not finding a documented pinout for the mic connector, but with tendency of Asian brands to borrow the technology there is a good chance that it is the same RJ-45 pinout as used in ICOMs, Yaesu or Anytone. You can test it by checking which pins ring to the radio’s chassis (GND) and which pin has +8V.

[KD4zWLE]

Well, the Icom plug was a no go. I found this in the forum today. Looks like I may be building my own.

[KD4zWLE]

Wait, is this all I need?

[K0TX]

This looks very much like Btech UV-25:

Cable for BTECH UV-25

3.5mm TRRS headset socket in the back has all required signals: [image] [image] Digirig TRRS to TRRS audio cable will look like this: BT tip (PTT) → DR ring 2 (PTT) BT ring 1 (MIC) → DR ring 1 (RIG_AFIN) BT ring 2 (SP) → DR tip (RIG_AFOUT) BT sleeve (GND) → DR sleeve (GND) Manual (1.1 MB)

[David_Todd]

Note: The manual diagram for the headset socket has the MIC and SPEAKER TRRS
QB25Headphone2DigirigCableDiagram.pdf (171.0 KB)
rings switched and the instructions provided by K0TX works well. Also, I cannot find if VOX is supported. I built a cable, used Digirig Mobile and have successfully used, WJSTX - FY4/FT8, JS8CALL, WinLink, MMSSTV.