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Re: [RTTY] Contest exchanges:Adding their call

To: 'Dave Hachadorian' <k6ll@arrl.net>, RTTY reflector <rtty@contesting.com>
Subject: Re: [RTTY] Contest exchanges:Adding their call
From: Al Kozakiewicz <akozak@hourglass.com>
Date: Wed, 11 Jan 2012 21:06:58 -0500
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
It's not necessarily the squelch.  This happens when running on noisy/congested 
bands with AFC on.

I had several times when running that I'd be called by folks who apparently 
took the brevity advice on this reflector from last year to heart and would 
call sending their callsign just once. No DE, no AB2ZY DE.  What do you think 
is going to happen if AFC is on and MMTTY is off chasing the noise on 40m or an 
adjacent signal?  They're 599 and I have to send AGN? 2 or 3 times before I can 
catch the full callsign and not just the suffix.

Al
AB2ZY

-----Original Message-----
From: rtty-bounces@contesting.com [mailto:rtty-bounces@contesting.com] On 
Behalf Of Dave Hachadorian
Sent: Wednesday, January 11, 2012 5:32 PM
To: RTTY reflector
Subject: Re: [RTTY] Contest exchanges:Adding their call

>there have been conditions where it may take a few (or more) characters 
>before my software tracks the other station and I miss the beginning of 
>the  exchange.

Your decoder squelch may have a settling time to establish its threshold.  I 
like to run with squelch OFF, or at least set well below prevailing signal 
levels.  You get more garbage characters in the absence of any signals, but 
that is really not a problem. 
Whenever a signal is present, the garbage stops printing.

In MMTTY, click the SQ button to turn squelch off, or left-click in the green 
area to set the squelch to a low level.  The squelch threshold is indicated by 
the thin black line in the green signal area.  You can move the line around by 
left-clicking in that window.

It is also possible that your rig is taking a while to set its receive agc 
level.  Turning RF gain down, and using fast AGC may help with that.


Dave Hachadorian, K6LL
Yuma, AZ










































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