[App_rpt-users] CM119 USB interface
mm at midnighteng.com
Mon Dec 24 01:30:20 EST 2018
I could be wrong and you may get a better answer but I believe if I
the rx sq level is for vox and you should/normally be using cos from a
pin on your fob, parallel port or using ctcss trigger for the COS
(oh... I may be about to find out for sure again as I try to setup my hr
remote again anew)
On 12/23/2018 7:28 PM, Brian G wrote:
> Hi all, Merry Christmas
> My local club is working on setting up a few ASL nodes, and I've been
> busy modifying some CM119 based USB sound cards to control the radios.
> I'm using this card/dongle:
> I've done several so far and have a few nodes working great with CTCSS
> carrier detect. One issue I'm consistently running into, is when
> setting the "RX Squelch Level" in the radio-tune-menu, it detects the
> current RX signal strength as 999. This results in the inability to
> use anything other than CTCSS for carrier detect. I can make plain old
> VOX work too, but it results in considerable (2 sec+) hang time.
> Using DSP carrier detect won't work because it's impossible to set the
> squelch high enough (max value 999). It always thinks there's a signal
> present when there isn't. This happens regardless of whether there's a
> radio connected to the dongle or not. As a matter of fact it happens
> even when plugging in an unmodified dongle right out of the package. I
> need it to work with no CTCSS. VOX would be fine if it wasn't for the
> hang time, but would rather use the DSP option in usbradio.conf.
> I assume it's just the nature of the beast, and if I want it done
> properly I need an adapter and radio capable of COS. But maybe someone
> knows if there's something that can be done or not? Anyone have any
> insight on how to either eliminate the VOX hang time, or eliminate
> that "invisible" signal? I might be overlooking something. Thanks for
> Brian - VA3DXV
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