[App_rpt-users] PTT Question w/iaxRPT and HT's connected to Node

John C. Westmoreland, P.E. john at westmorelandengineering.com
Mon Aug 17 05:13:59 EDT 2015

Hello All,

I was wondering if any of you have seen this with iaxRPT and app_rpt -

but - if I keep all settings the same - and I set

invertptt=0 -

iaxRPT works fine - audio through that gets copied out and HT's receive
just fine - but; when I try
to talk with the HT's - audio isn't received - node radio receives but the
audio isn't xmitted through.

Now, if I set

invertptt=1 - then the HT's can xmit and iaxRPT 'hears' it - but now iaxRPT
cannot xmit.

Has anyone seen this issue?  Hopefully just a config issue I have missed.

Maybe a weak pull-up or pull-down on PTT is needed?

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