[arm-allstar] DTMF tones not decoded properly

[Doug Crompton]

Being too close should not matter.unless RF from the radio you are talking
to your node with is getting into your node which can happen. Easy to test,
just get a good distance 20-30 feet away.


*73 Doug*

*WA3DSP*

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

On Fri, Mar 29, 2019 at 3:23 PM "B Harvey via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Don,
>
>
>     I did log in to my node remotely to check a few settings. Pre-emphasis
> and de-emphasis are both disabled. RX gain is enabled. I can't test actual
> levels or wide / narrow mode so I'll have to wait until I get home to try
> those out. Another thing that occurred to me is that perhaps I'm too close
> to the node when I'm transmitting from my HT and I may have some de-sense
> thing going on. Obviously a few things to test when I can lay hands on
> everything.
>
> Brian / KK6DOQ
>
> On Fri, Mar 29, 2019 at 11:21 AM "Don Backstrom - AA7AU via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > On Fri 29-Mar-19 09:19, "B Harvey via ARM-allstar" wrote:
> > > I don't remember if I confirmed wideband operation.
> >
> >         Best double-check that. Narrowband can give you real
> > hard-to-diagnose
> > DTMF issues. We've had DTMF problems with our "Chili" units based on the
> > SA818 chips:
> >
> >         "One other serious issue we discovered during our design and
> > testing
> > was that all of the SA-818/DR-818 Modules we tested have their
> > Wide/Narrow Band command locked in the Narrow Band mode from the factory
> > and will not actually program to wideband. No error is returned when
> > programming, the module just stays in narrow-band! So after literally
> > months of discussion with the manufacturer, we finally were able to
> > acquire a programmer and the appropriate firmware for the modules to
> > make them perform as expected."
> >
> >         Apparently no one else had reported this difficult-to-discover
> > issue to
> > the manufacturer. We definitely spent some time chasing our tails on
> > this one. Bottom line: never assume! As a great man once said: Trust,
> > but verify.
> >
> >         HTH,
> >
> >         - Don - AA7AU
> >
> > _______________________________________________
> >
> > ARM-allstar mailing list
> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> >
> _______________________________________________
>
> ARM-allstar mailing list
> ARM-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>
> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>