[App_rpt-users] Descriminator audio needed????

Jim Duuuude telesistant at hotmail.com
Mon Mar 5 02:54:44 EST 2012


IF it is going to be used as a Voter receiver, the discriminator audio is absolutely
necessary. If it is just being used as a remote radio interface, then the external
CTCSS input can be used exclusively as an input to provide a "valid received signal"
signal.

JIM

From: tim.sawyer at me.com
Date: Sun, 4 Mar 2012 19:54:34 -0800
To: app_rpt-users at ohnosec.org
CC: baldwin88 at yahoo.com
Subject: Re: [App_rpt-users] Descriminator audio needed????



Sorry, there is no COR input on the RTCM. It must have full bandwidth discriminator audio to correctly detect noise for squelch and RSSI. If you have a radio that limits discriminator audio to between 300 and 3000 hz it probably won't work. 
The good news is the squelch action is very, very good. I'd say it's as good as the much exalted MICOR squelch, maybe even better. On strong signals it's super fast, nothing more than a mic click, like reverse burst. Weak signals will have a long squelch tail.

--
Tim
:wq


On Mar 4, 2012, at 6:49 PM, Fran wrote:Is descriminator audio needed for COS or can I use any radio with the RTCM???_______________________________________________
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