[arm-allstar] Doug - Your response to my COS question

[Doug Crompton]

Jeff,

  The docs you are reading must refer to using usbradio which was commonly
used but it is a different channel driver than we generally use in the
hamvoip code which is simpleusb. As I pointed out before the usbradio
channel driver works by detecting the PL with DSP and does not require a
hard wired COS. This would be advantages for some radios that lack a hard
wired COS output but the downside is the poor audio performance of the
usbradio channel driver. The bottom line is if you have hard wired COS
coming out of your radio then using simpleusb is the better approach to
interfacing. We are working on a replacement channel driver for both
simpleusb and usbradio which should be out later this year.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*



On Sat, Feb 24, 2018 at 10:16 PM, "Jeff Young via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Doug:
>
>
>
> I am confused. I have now connected the GM300 COR/COS output to pin 8 of
> the
> URI and everything works fine. The URI doc and other HAMVOIP doc seems to
> imply that I don't need a hardware COR/COS, that somehow the URI generates
> a
> COR/COS from the received audio on the radio. Is that not the case? Must I
> always have a hardware COR/COS for the system to function correctly?
>
>
>
> Thanks for your guidance.
>
> 73,
>
> Jeff
>
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