Is there a way to control COS without using phone mode, and without having to modify a CM108 sound card? My idea is to make a radioless node using a stock, unmodified CM108 usb sound card, add your speakers and mic, use the keyboard on a pc for push to talk. Thanks
You may wish to look at KC1FSZ's Ampersand-ASL project if you want to use unmodified sound devices (doesn't have to be a CM108 necessarily)
https://github.com/Ampersand-ASL
This does require running a web browser on some machine somewhere if you don't have HID PTT/modified CM108. I have used it with Allscan UCI80, UCI120 and UCI200 interfaces with hand mics, haven't really much with other audio devices.
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On Aug 24, 2026, at 19:25, Clifford Feather [email protected] wrote:
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Is there a way to control COS without using phone mode, and without having to modify a CM108 sound card? My idea is to make a radioless node using a stock, unmodified CM108 usb sound card, add your speakers and mic, use the keyboard on a pc for push to talk. Thanks
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As far as I know, phone mode does not change cos status, just tx/ptt status. Tis why there is no CT when dropping the TX from phone..
Only mentioning it so you think about it better while working on custom build/solutions.
If you are using an older 'PC' with a real parallel port, you can assign/inject COS from there.
All just food for thought. Tough trying to workaround some of the limits sometimes.