[App_rpt-users] homebrew USB sound fob no RX audio

Kevin Custer kuggie at kuggie.com
Mon Mar 2 14:32:34 UTC 2015


Skyler,

You may want to refer to the following articles to insure you didn't cut 
the wrong trace eliminating RX audio getting to the CM108 chip.  There 
is nothing wrong compatibility wise.

http://www.repeater-builder.com/projects/fob/startech-fob.html
http://www.repeater-builder.com/projects/fob/startech-syba-fob.html

The second article has a PDF you can refer to as well.

Kevin



On 3/1/2015 10:23 PM, Skyler F wrote:
> I made the modification to the startech CM108 sound fob. This is for a 
> second node on the same machine. Everything should be working, the 
> node is transmitting with audio and PTT is activating properly.
>
> The receive should be working too, I plugged it in to my macbook and 
> was able to hear the white noise just fine and I could hear my voice 
> when I keyed up.
>
> I also had Jeremy W0JRL help with everything on the software, and we 
> tried about everything from Flat audio to speaker audio to COR to 
> CTCSS but still no receive audio coming through the network, it isn't 
> detecting anything when I am transmitting from my node radio to the node.
>
> I was on the phone with him for almost two hours trying anything we 
> could think of, I did anything hardware, and he modified anything 
> software, but we still got no audio through the network. We even 
> turned off the squelch and there was a dead carrier through the network.
>
> Is there something wrong compatibility wise with this fob? I did 
> everything in the instructions and I got it from here 
> http://www.newegg.com/Product/Product.aspx?Item=N82E16829128002.
>
> I used this instruction manual
> http://www.repeater-builder.com/projects/fob/USB-Fob-Construction.pdf
>
> If this is a compatibility issue, it is sure a weird one because the 
> Txaudio worked fine.
>
> Is there a way to tell if any audio at all is coming in to AllStar?
>
> What can I try next to troubleshoot?
>
>
> 73
> Skyler KDØWHB




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