[chirp_users] TSQL / CTCSS

Dennis Wage dwage at dwage.com
Sun Mar 25 17:59:50 PDT 2018


This much I knew. But I had it programmed correctly. So it is now obvious
to me it was a simplex local communication and they were using a different

It's all good now. The fog is lifting.

DW :)

Dennis M. Wage

245 Corum Hill Road
Castalian Springs, TN 37031
(615) 310-4242 Cell
(615) 562-5128 Home

On Sun, Mar 25, 2018 at 7:43 PM, Jim Unroe <rock.unroe at gmail.com> wrote:

> > The other day my UV-5R was in scan mode and a repeater in Huntsville
> > continually stopped my scan with a carrier or tone, not sure which yet.
> But
> > I heard no audio. No matter where I set the squelch, even to 0 I got no
> > audio. However, if I hit the Moni button I could hear the guys talking.
> >
> > What was happening here?
> You have programmed a receive CTCSS tone on the frequency/channel you
> were listening to. CTCSS is a form of selective squelch. When you have
> a receive CTCSS tone programmed, only signals that are transmitting
> the matching CTCSS tone can open your squelch. Same as a repeater that
> requires tone access. If you don't transmit the matching tone, the
> repeater can't hear you.
> Pressing the [MONI] button overrides any programmed receive CTCSS
> tone, programmed receive DCS code and SQL setting so that you can hear
> any FM signal that is in range.
> http://www.miklor.com/COM/UV_CTCSS.php
> Jim KC9HI
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