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Re: [RTTY] MMTTY AFC Bug

To: "Joe Subich, W4TV" <lists@subich.com>
Subject: Re: [RTTY] MMTTY AFC Bug
From: Dick Flanagan <dick@k7vc.com>
Date: Sun, 09 Jan 2011 13:00:41 -0800
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
The AFC button turns itself off and I have to click it back on.

Dick

At 08:36 AM 1/9/2011, Joe Subich, W4TV wrote:
 >
 >> I'll be running, give my exchange and then suddenly I can't find the
 >> other station. I notice that AFC has slipped off,
 >
 >Are you sure AFC is turning off (being disabled) and not retuning
 >due to an interfering signal or noise?  I've long noticed AFC will
 >"move" the receive frequency in response to noise with or a strong
 >"adjacent channel" signal.
 >
 >The AFC behavior is another reason that I use FSK and keep AFC OFF.
 >I do all my tuning with the main knob (in "S&P") or RIT (in "Run").
 >In my opinion, AFC is a waste of code.  However, if you *MUST* use
 >it, set the SQ parameter higher (reduce the chance of tuning on
 >noise or weak interfering signal), set sweep to 0.5 to limit the
 >tuning range and increase Time to slow its action.
 >
 >73,
 >
 >    ... Joe, W4TV
 >
 >
 >On 1/9/2011 7:37 AM, Dick Flanagan wrote:
 >> I am running MMTTY 1.68A with the latest Writelog.  I'll be running,
 >> give my exchange and then suddenly I can't find the other station.  I
 >> notice that AFC has slipped off, punch it back on and stumble
 >> on.  I'm wondering if there is a limit to how far the AFC can pull a
 >> signal without turning itself off.  This happens regularly, at least
 >> once or twice an hour.  Needless to say, it causes a serious kink in
 >> my rhythm every time it does that.
 >>
 >> I'll have more after the RU and I've had a chance to get some *real*
 >sleep!  :)
 >>
 >> Dick
 >>
 >> At 11:35 PM 1/8/2011, Dave AA6YQ wrote:
 >>   >>>>AA6YQ comments below
 >>   >
 >>   >-----Original Message-----
 >>   >From: rtty-bounces@contesting.com [mailto:rtty-bounces@contesting.com]On
 >>   >Behalf Of Dick Flanagan
 >>   >Sent: Sunday, January 09, 2011 2:18 AM
 >>   >To: RTTY contest group
 >>   >Subject: [RTTY] MMTTY AFC Bug
 >>   >
 >>   >
 >>   >Is there a fix for MMTTY randomly turning AFC off?
 >>   >
 >>   >>>>Yours is the first report of this behavior I recall seeing, Dick. How
 >>   >frequently is this happening? Are you running MMTTY 
standalone, or as part
 >>   >of another application? What version of MMTTY are you running?
 >>   >
 >>   >    73,
 >>   >
 >>   >        Dave, AA6YQ
 >>
 >> --
 >> Dick Flanagan K7VC
 >> dick@k7vc.com
 >> _______________________________________________
 >> RTTY mailing list
 >> RTTY@contesting.com
 >> http://lists.contesting.com/mailman/listinfo/rtty
 >>
 >_______________________________________________
 >RTTY mailing list
 >RTTY@contesting.com
 >http://lists.contesting.com/mailman/listinfo/rtty

--
Dick Flanagan K7VC
dick@k7vc.com
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