[arm-allstar] Kerchunk - OS Sound

Doug Crompton wa3dsp at gmail.com
Fri Feb 10 00:19:13 EST 2017


James,

"kerchunks" are from RF keyups into your node radio. It is possible your
COS line is getting noise pulses from the radio. If this is the case you
would also here it on the output of your node radio unless it is very short
duration. There are no system sounds - assuming you are using a BBB or Pi.

You should always be using RX PL or DCS on the node radio not just noise
squelch. If you are using the V1.5 code you could add some COS delay in the
simpleusb menu - rxondelay item M.  This would delay the COS signal very
slightly and very short spikes would not register as a COS keyup. This
should normally not be necessary though. You really need to solve the
problem from the receiver first if it exists.



*73 Doug*

*WA3DSP*

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

On Thu, Feb 9, 2017 at 9:35 PM, "James Hatmaker via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Hi All -
>
> I am seeing a high number of kerchunks when I run a rpt status on the node.
> It seems that I can reproduce it just by running dmesg on the cmd line.
> Did I some how turn on system sounds?  and how can I turn them off if that
> is the case.
>
> Thanks -
>
> James
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