[App_rpt-users] Autopatch on a simplex node?

Bob Brown - NØEUH bbrown at byrg.net
Fri Jul 31 17:33:01 EDT 2009

I woul dnot expect a simplex pathc to work unless some kind of sampleing is
done to see if there is any RX activity on the RF side as if you have a
patch up you will be in full duplex in oder for it to work properly ( ie
Phone call = Full Duplex) simplex wont work, as in you have no control of
the communications since your TX is up all the time.
Thanks in Advance

  Bob Brown, NØEUH

  Kansas City Metro Area




Marie von Ebner-Eschenbach<http://www.brainyquote.com/quotes/authors/m/marie_von_ebnereschenbac.html>
- "Even a stopped clock is right twice a day."

On Fri, Jul 31, 2009 at 16:22, Ramesh Dhami (VA3UV) <Ramesh at va3uv.com>wrote:

> Ramesh Dhami (VA3UV) wrote:
> > Hi All;
> >
> > I've been helping another node owner to setup an autopatch on his
> > system.  I have everything working - BUT... when it comes to outbound
> > calls, the PTT on the local (simplex) radio is kept keyed, which
> > prevents any local traffic from being sent over the radio to the remote
> > callee.
> >
> > I'm wondering whether the PTT can be dropped on a simplex node?
> >
> <-- Just an update folks;  I've been experimenting with the auto-patch
> stuff on my own system (node 2182), which is connected to a repeater -
> but since I use an external controller, my node is also running as a
> half-duplex node (duplex=0).
> So with duplex=0, the patch does not work, there is no PTT activity on
> the local transmitter - yet remote transmitters (i.e., nodes that are
> connected to me) do have their TX keyed (regardless of whether they are
> half-duplex or full-duplex).
> I changed duplex=1; no difference.
> Changing duplex=2, did the trick - there was PTT activity on the local
> transmitter and my own audio was also going out over the local
> transmitter (plus remotes as well) - no problem there.  I need to
> experiment a bit further to see whether I can sustain the duplex=2
> setting with an external repeater controller, or whether I have to say
> b'bye to the controller and connect the app_rpt box directly to the
> repeater.
> This also leads me to believe that a simplex node (duplex=0) will not
> work with an auto-patch.  Can someone confirm this?
> Also, is anyone using duplex=2 with an external repeater controller?
> Thx!
> Ramesh.
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