[FADCA] More FPAC Linux neat stuff.

[Chuck Hast]

On Fri, 12 Nov 2004 23:04:59 -0500, Russell Oder <oderr at bellsouth.net> wrote:
> I finally got the fellow at Motorola to call me back. I told him what we are
> discussing and he said we needed to determine how we could keep the repeater
> from retransmitting the received 9k6 signal until the digital regenerator
> keyed the transmitter and provided the data. Otherwise we were likely to end
> up with corrupted data being transmitted ( two sets of the data being sent.)
> 

This is a easy one, it does require that all voice users use PL or DPL, If there
is some form of PL present you detect it and pass the voice signal.

If there is data, you use the DCD line to open the voice path and the
regenerated
data is injected into the modulator.

I helped set up 30+ sites in Louisiana for just such a system.  If you
want to do COR
then you turn off data if there is only carrier, if there is carrier +
data then you open
the voice path.

I do not recommend using COR only you will get a lot of false burst in
the middle
of data transmissions that will cause retries. 

> I will call Linda and talk with her as I need to know exactly how the
> digital regenerator will be working.  Without making some assumptions that
> may turn out to be wrong.

OK. That would be good.