amixer audio level

[Aaron, N3MBH]

Greetings Gene,
Thanks for trying out the beta of the project. There are a couple different models of the easy digi. You shouldn’t be using one that relies on using the vox within the radio. It is too unreliable as audio will go up and down and there will be breaks in between words with voice communication. VOX is more geared towards digital modes like PSK where you have a consistently peaking signal to keep it open. You should be using an Easy Digi that has an optocoupler on the board and wired up to a GPIO as shown here: https://openrepeater.com/getting-started/hardware.

If yours doesn’t have one, you can simply build an external circuit for the PTT control. The schematics for the easy digits are available online and you can just build that part of the circuit and use what you have for audio isolation. You might want to do that and include an optocoupler for COS control as well.

As for the audio level, it should be fairly low as it will need to be around mic level which is about 1000x less than line level. You don’t want to overdrive the mic circuit on the transmitter. You can try to run it into a powered speaker for testing purposes.

On a side note, we are working on the next beta, so hope to have some things smoothed out in that. Hope this helps.

73,
Aaron – N3MBH / WRFV871

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[Gene, N7ARO]

Aaron,

Thanks for the info. I guess you are right about the audio level. Don’t want to burn up the input of the radio.

I am unsure if the Easy Digi I grabbed has the optocoupler in it or not. If not, I have one that does. I did see the schematic posted in the hardware section that shows where the wires connect between the Pi and the Easy Digi.

I will take another stab at it (the proper way) and report.

Before I got it working this morning, I had to set the TX and RX audio devices to 0 instead of 1.

Thank you for the prompt response.

73’s
Gene
N7ARO

[Aaron, N3MBH]

Not a problem. Yes the audio devices under ports is something I am working on in the next beta. It seems to vary from device to device and the configuration is confusing some. I am working on a background process that detects the connected devices and presents them in a dropdown menu for easy selection. We are working to try to make things more seamless. Thanks and good luck.

73,
Aaron
N3MBH

73,
Aaron – N3MBH / WRFV871

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