[App_rpt-users] RTCM COR CTCSS decode issues
n5zua at earthlink.net
Fri May 10 01:13:09 EDT 2013
All of my GM300 radios swing from 0 to +5 VDC for active high COS. Where are
you getting 13.5 volts from?
Are you using some type of pull up line?
----- Original Message -----
From: Bill Hurlock
To: app_rpt-users at ohnosec.org
Sent: Thursday, May 09, 2013 8:04 PM
Subject: [App_rpt-users] RTCM COR CTCSS decode issues
I have just installed a GM300 for my transceiver and I configured it to put
out TPL /DPL det on the accessory plug. Signal looks OK about 2.59 volts for
low and 13.5 volts for HI. I can see this change correctly when I use TPL or
when I don't. I set RTCM menu item line 12 external CTCSS to non-inverted.
line13 External COR to 0 normal. The problem is audio passes into the system
no matter if it has tpl tone on the incoming carrier or not. I can see the
top green light (RX) on the RTCM module no matter if the carrier coming in
has tone or not. I'm out of ideas on how to fix this. I want the RTCM to
respond to the incoming CTCSS control line from the GM300. Any ideas on what
is happening here?????
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