[arm-allstar] Simple USB

[Doug Crompton]

Tom,

 You have to understand that a TX level meter would be measuring the
digital level to the FOB. This would NOT indicate that the FOB is actually
putting out audio. If there was no FOB there it would still indicate. So
its usefulness would be limited and its level indication would be
meaningless. Are you actually having audio problems? You can monitor the
audio with an amplifier out of the FOB or headphones without an amplifier.


*73 Doug*

*WA3DSP*

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

On Sun, Aug 4, 2019 at 3:48 PM "Tom Eaton via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> I was only wanting it for a reference, it would just indicate as to whether
> or not there was audio output from the pi. I know this may be useless to
> most so if there's anybody out there that could contact me off-list and
> help me modify my own that would be great thank you so much.
>
>
> On Sun, Aug 4, 2019 at 3:40 PM "Stephen Gansky via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > Doug
> >
> > I completely agree with what you said but I feel that a “meter” on the TX
> > side would still be helpful.
> >
> > Steve
> >
> >
> > Sent from sgansky iPad
> > (C) 215-990-5300
> >
> > > On Aug 4, 2019, at 3:12 PM, Doug Crompton via ARM-allstar <
> > arm-allstar at hamvoip.org> wrote:
> > >
> > > Tom,
> > >
> > > I assume you mean that you have the bar graph for level setting on RX
> > > audio but nothing on transmit. Here is the reason. On RX it is the
> audio
> > > which is digitized into the network so it is important for the level to
> > be
> > > correct and also it is a known level. You want it to fill the digital
> > > amplitude limit but never over that limit. Lets say 90% of the limit.
> > For
> > > the TX level being that it goes to an unknown local transmitter  a
> level
> > > meter would be meaningless since the attenuation/gain and TX level
> > > requirements AFTER the meter would be unknown. The only way to
> accurately
> > > set TX level is with a deviation meter or station monitor tuned to your
> > > transmit frequency. Since most would not have either of these
> available a
> > > good way to set the TX level is to listen to a local repeaters level
> and
> > > without changing the volume on your radio switch to your node
> frequency.
> > > The levels should match and there should be no distortion. For a
> simplex
> > > node this is usually more than adequate.
> > >
> > >
> > > *73 Doug*
> > >
> > > *WA3DSP*
> > >
> > > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> > >
> > > On Sun, Aug 4, 2019 at 3:01 PM "Tom Eaton via ARM-allstar" <
> > > arm-allstar at hamvoip.org> wrote:
> > >
> > >> In simple USB we can see the receive audio as a reference is there a
> > way to
> > >> see transmit audio in the same manner and if not could that be
> > implemented.
> > >>
> > >> Tom, KC4CBQ
> > >> _______________________________________________
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> > >>
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> > >>
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> >
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