[amsat-bb] Re: "High Q" CTCSS tones?

Greg D. ko6th_greg at hotmail.com
Mon May 3 20:34:42 PDT 2010

Hi Gordon,

Ok, that makes two of us with the same guess.  If so, then it only affects the Receive side of the rig, so for turning on the Transmit side 67hz tone for getting into AO-51, it shouldn't matter which one I use.  Easier to program if I can just use the first one I find in the table...


Greg  KO6TH

> From: gordonjcp at gjcp.net
> To: amsat-bb at amsat.org
> Date: Mon, 3 May 2010 10:33:06 +0100
> Subject: [amsat-bb] Re: "High Q" CTCSS tones?
> On Sun, 2010-05-02 at 00:27 -0700, Greg D. wrote:
> > What are these "high Q" tones, and why would I want to use one or the
> > other when there are duplicates?  The manual tells me basically
> > nothing, and a quick scan of the Web turned up the same.
> I'm guessing that this means they have a narrower passband within which
> they will accept the tone as being "right".  If you look at the tone
> spacing for CTCSS, some of them are only 3Hz apart.
> Gordon MM0YEQ
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