I built a prototype cable to use the Digirig v1.9 PTT output to pull PTT on the Hermes Lite 2. I am using it with Quisk software.
The construction is:
Digirig side TRRS:
T - no connect
R1 - no connect
R2 - PTT
S - GND
Hermes Lite 2 side TRS:
T - no connect
R - PTT
S - GND
The schematics are:
Digirig side:
HL2 side:
73 Constrainted
I used these terminal block cables from Amazon. They were supposed to accommodate AWG28 - AWG16, but I had a hard time with AWG18. The smaller gauges might work better. How do you prototype your 3.5mm audio cables? How would you build a finished cable but still DIY?
73 Constrainted
Just finished building this cable to see if I could connect to Winlink HF. When I plugged it into my Hermes Lite, I get a woman’s voice saying ‘Caio’ every 10 seconds or sbefore?o. It’s kind of creepy. Has anyone ever experienced that
I have not. The cable I described is to pull PTT only. No audio.
I use virtual cables to interface Vara HF to the HL2 to control audio and PTT.
73 Constrainted
Would you happen to have some images of this cable and the connections? When you show no connect on T and R1, do you mean not connect to anything or to ground? Thanks
The Hermes Lite 2 has no external audio inputs. A user must use virtual audio cables (VACs). SDR programs provide interfaces for VAC and Virtual Serial Ports for PTT. There is a Hermes Lite 2 google group to discuss these issues. Hermes-Lite - Google Groups
There is a Key/PTT jack on the HL2 front panel, but that will not help you with Vara HF. I was using the Digirig to pull PTT only before I decided to use virtual serial ports.
73 Constrainted
No connect. This was for PTT for SSB voice before I switched to virtual serial ports.
For Vara HF via HL2, consult the document here:
https://groups.google.com/g/hermes-lite/c/wCzkEAViJ7s/m/hWWC3xZvBgAJ
I am not sure where Rick N8SDR is keeping the latest version.
73 Constrainted
I have a variety of breakouts, male, female, TS, TRS, TRRS, then of course DB9, 15, 15HD, 25, etc.,
Matt
AL0R
This project was a year ago, and I no longer have the cable.
73 Constrainted
