Brian, I could be wrong and you may get a better answer but I believe if I understand right, 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 ...mike/kb8jnm (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: https://www.amazon.ca/Syba-SD-CM-UAUD-Adapter-C-Media-Chipset/dp/B001MSS6CS
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 reading! -- Brian - VA3DXV
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