Very strange problem with *sound interface
Posted: Sun Nov 24, 2019 3:45 pm
Morning yall,
Let me open by saying while I am not a licensed HAM operator I currently perform all of my testing at the lowest power setting, with the antenna removed and on an unlicensed analog FRS channel.
Myself and my buddy are struggling with this very strange problem on our GD77's. The issue is not OpenGD77 specific, but I figured I would ask in the off chance that someone here has ran into this phenomenon before.
We have two UV5R's, two GD77's and two interface cables that I made. The interface cables are CM108 USB sound devices which I soldered directly to the Radiodity speaker/mic combo unit. My understanding is that the GD77's and UV5R's have the exact same speaker/mic pinouts and are both compatible with the connector on the speaker/mic combo unit. We tested the interface by transmitting sound from youtube from one UV5R to another, and from the UV5R to a GD77. The strange thing is that when you try to transmit from the GD77 the sound doesn't come through. Even stranger yet is that the keypad tones *do* go through indicating that there is a functioning radio link but just no audio from the K-Plug is getting out.
Any idea what the heck we might be doing wrong?
Let me open by saying while I am not a licensed HAM operator I currently perform all of my testing at the lowest power setting, with the antenna removed and on an unlicensed analog FRS channel.
Myself and my buddy are struggling with this very strange problem on our GD77's. The issue is not OpenGD77 specific, but I figured I would ask in the off chance that someone here has ran into this phenomenon before.
We have two UV5R's, two GD77's and two interface cables that I made. The interface cables are CM108 USB sound devices which I soldered directly to the Radiodity speaker/mic combo unit. My understanding is that the GD77's and UV5R's have the exact same speaker/mic pinouts and are both compatible with the connector on the speaker/mic combo unit. We tested the interface by transmitting sound from youtube from one UV5R to another, and from the UV5R to a GD77. The strange thing is that when you try to transmit from the GD77 the sound doesn't come through. Even stranger yet is that the keypad tones *do* go through indicating that there is a functioning radio link but just no audio from the K-Plug is getting out.
Any idea what the heck we might be doing wrong?