[App_rpt-users] ECHO Echo echo ...

[Tim Sawyer]

My first guess is that it’s an intermittent RF problem. Sounds like the transmitter is getting into the receiver. That would have a echo due to the short audio delay in the app_rpt repeat path. 

> On Feb 2, 2015, at 5:57 AM, Geoff <ars.w5omr at gmail.com> wrote:
> 
> Weirdness sat in yesterday evening... and even after everything was
> powered off, unplugged, connections tightened, wires checked and
> rechecked, computer was 'shutdown -h now', unplugged, caps drained, etc...
> 
> restarted everything and all seemed cool, locally.
> 
> So, I have 29655 (UHF repeater, usbradio; no-dsp), 29656 (echolink - no
> hardware) and 29657 (vhf simplex node, TMV-7a using the packet port,
> 9600-baud [discriminator audio], ctcss from DSP) and all of a sudden,
> the 2m node went ballistic.  Did the resets, made sure the node was on
> the right frequency, etc, and again, this morning, there was 'echoing'
> every time the 2m node was unkeyed. Sounded like acoustical feedback. 
> Weirdness!
> 
> so... (on uhf) *129657. Have a friend on the other side of town - 2
> systems linked together.  Dialed the uhf node to friends node. Dialed
> the vhf rig to the same node ... no echo.
> 
> I let it stay like that about a half hour and just now, on vhf
> disconnected from my friends link, and reconnected 29657 (vhf simplex
> node) to 29655 (uhf repeater - both nodes on same computer) and ... NO ECHO.
> 
> Why?
> 
> -Geoff/W5OMR
> 
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