[arm-allstar] full duplex radioless node

[Doug Crompton]

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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