[arm-allstar] Kerchunk - OS Sound

Fri Feb 10 13:25:22 EST 2017

Doug,
To answer your question, I am viewing the Kerchunk count in asterisk's
itself using the "rpt stats $NODEID" command.
one of the lines:

Kerchunks today..................................: 0

The counter resets each night at midnight.

When testing, I can disconnect/power off the radio, and connect the allstar
node (call it node A)  to one of our other nodes (call it node B), and we
will hear a kerchunk on the node B (and any other Allstar nodes that are
linked.
This will show up in the "rpt stats $NODEID" on node A in the Kerchunks
today.  On all the other nodes it does not show up as a kerchunk but just a
valid "KeyUp"

I can  reliably re-produce by running dmesg on the Raspberry Pi node A.
So, basically after running "dmesg" on the command line of the Pi for node A
we would see:
Kerchunks today..................................: 1

On the connected/distant allstar node (node B), we would here a
kerchunk/keyup the stats would have something
Identifier state.................................: CLEAN
Kerchunks today..................................: 0
Kerchunks since system initialization............: 0
Keyups today.....................................: 0
Keyups since system initialization...............: 367

The Kerchunk count on node B will still be 0 (where it was incremented on
node A).
A valid Keyup would have been detected on node B.

The fact that I can reproduce this with the radio on node A powered off and
by running a command on the system was what was leading me down the path
that maybe there was a system sound that was being detected by the USB
sound device.  (and not from RF being received by the radio).

Of course this may just be a rabbit hole that could just easily be "fixed"
by rebuilding with the new version.  However, it is in my nature to figure
out the root cause. I have specifically kept this node around because I
wanted to figure out what was causing the anomaly.

73

James
KC7LHV

On Thu, Feb 9, 2017 at 11:49 PM, "Doug Crompton via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> When you say "kerchunks today increased by 1"  What do you mean? Are you
> there to know if this is caused by someone or some noise really opening
> your radios squelch? Even PL can be falsed with noise occasionally. Turn up
> the volume on your node radio so you can hear anything coming in. I doubt
> very much it has anything to do with the code but it could be an
> interference issue of some kind. I don't think it will change anything but
> it would be a good idea to updrade to V1.5.
>
>
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
> On Fri, Feb 10, 2017 at 1:24 AM, "James Hatmaker via arm-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > Doug,
> >
> > Thank you for the reply.  I currently am running with CTCSS (or tone
> > enc/dec depending on the radio) 100.0Hz.  When I was running on an
> desktop
> > I did not have this, and only appeared when I switch to a raspberry Pi3.
> > In trying to troubleshoot, I have switched the radio which is currently a
> > Yaesu VX3.  I have switch the frequency/band between 2m/70cm and the
> > problem still persists.  I am using an ARS AllStar Adapter (which is the
> > same from the initial Asterisk setup).
> > I have tried moving the Pi between wired/wireless (currently running
> > wireless).  I have added a ferrite snap-on on the cable going from the
> > radio to the USB dongle just to see if that would help.  During my
> testing
> > I had tried  setting the rxondelay=25.
> > as a last resort I powered off the radio completely and ran the same
> test.
> >
> > running rpt stats
> > then dmesg
> > then rpt stats again.
> > (with the radio off)
> > and the Kerchunks today increased by 1.
> >
> > I know this isnt the image you just released, so I might just rebuild the
> > pi.  I am sure I must have inadvertently did something to the pi.
> >
> >
> > Thanks!
> >
> > James
> >
> >
> >
> >
> > On Thu, Feb 9, 2017 at 10:19 PM, "Doug Crompton via arm-allstar" <
> > arm-allstar at hamvoip.org> wrote:
> >
> > > 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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> > > > arm-allstar at hamvoip.org
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> > > >
> > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> > > >
> > > >
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> > >
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> > >
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> > >
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> >
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> >
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> >
> >
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