[App_rpt-users] Radio programming for RTCM in half-duplex mode

Tom Hayward tom at tomh.us
Sat Jul 16 14:42:35 EDT 2016


I'm using an RTCM for a half-duplex link, adding Allstar to an
existing repeater remotely. (We don't have Internet at the repeater
site yet, but eventually the plan is to have the link at the repeater
site in full-duplex mode.)

I'm trying to deduce the canon method to program the radio.

The repeater only transmits PL when the receiver is active, so with
CTCSS on the link receiver I don't have to worry about courtesy tones
or IDer getting through the link. I have the RTCM set for external
CTCSS.

What I think I need is the link radio programmed for
TX 147.90 no PL
RX 147.30 88.5 Hz CTCSS

Then add txctcss in chan_voter, so that the link only transmits PL
when there is audio on the link. I don't want the link IDer going
through the repeater.

As far as I can tell, there's no CTCSS DSP in the RTCM or chan_voter,
so I need to use the radio's CTCSS. Is this correct?

Tom KD7LXL



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