[arm-allstar] full duplex radioless node

[Doug Crompton]

Yes,  But only on a node that has full duplex audio like a radio-less node.
It obviously would not work with a half duplex radio node.


*73 Doug*

*WA3DSP*

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


On Tue, Apr 9, 2019 at 12:31 PM "B Harvey via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Doug,
>
>  Will this change alone allow me to issue DTMF commands (and the node
> respond) when the node/network is receiving transmissions?
>
> Brian / KK6DOQ
>
> On Tue, Apr 9, 2019 at 9:09 AM "Doug Crompton via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > Brian,
> >
> >   If you want full duplex without hearing yourself use  duplex=3 in
> > rpt.conf
> >
> > This is very useful when using a radio-less node.
> >
> >
> > *73 Doug*
> >
> > *WA3DSP*
> >
> > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> >
> > On Tue, Apr 9, 2019 at 11:43 AM "B Harvey via ARM-allstar" <
> > arm-allstar at hamvoip.org> wrote:
> >
> > > All,
> > >
> > >        I've got my heart set on building a full duplex radioless node
> > > similar to the one shown on the Hampvoip.org tutorial
> > > https://hamvoip.org/hamradio/USBFOB_without_radio/
> > >
> > >        I recall that when I set up my last node (which used a radio
> > > interface) I was asked to select whether I would be using a half duplex
> > or
> > > full duplex in the setup questions. If I select full duplex, it isn't
> > clear
> > > to me what would prevent audio feedback between the speaker and mic
> when
> > I
> > > key up. Are there additional changes other than having the mic PTT
> button
> > > sink the COS line through the diode as shown in the schematic?
> > >
> > > Brian / KK6DOQ
> > > _______________________________________________
> > >
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> > >
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> > >
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> >
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> >
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> >
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