[arm-allstar] Difference between duplex=1 and duplex=3?

[David McGough]

Mode 3 is full-duplex because when the local RX COS is asserted, the local 
TX PTT follows, keying the transmitter. That won't work if you have only a 
single radio.

All audio from the local RX goes out to any linked nodes. And,
simultaneously, any audio from linked nodes also comes back out the local
TX. There just is no audio path in AllStar from the local RX to the TX.


73, David KB4FXC


On Fri, 24 Jul 2020, David Andrzejewski wrote:

> Forgive me but I'm definitely missing something here... if Allstar is
> not doing the repeating of audio, then wouldn't it make it simplex? 
> What's duplex about it at that point?////
> 
> On 7/24/2020 19:40, David McGough wrote:
> > duplex=1 is simplex, with full telemetry.
> >
> > duplex=3 is full-duplex mode, just like duplex=2, with the difference that
> > no audio from the local receiver is send back to the local transmitter,
> > via the AllStar software. This is useful where you have an external audio
> > processor, controller, etc. It's also nice on radio-less nodes (since most 
> > a full-duplex), so you can hear any link audio while you're talking.
> >
> > 73, David KB4FXC
> >
> >
> >
> >
> > On Fri, 24 Jul 2020, "David Andrzejewski via ARM-allstar" wrote:
> >
> >> What exactly is the difference between the two?
> >>
> >> - Dave/AD8G
> >>
> >>
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