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Re: [RTTY] RTTY crosshair pattern

To: rtty@contesting.com
Subject: Re: [RTTY] RTTY crosshair pattern
From: Lee Roberts <ham@n0sq.us>
Date: Fri, 01 Feb 2013 20:52:08 -0700
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
Bill Turner <dezrat1242@yahoo.com> wrote ..
> ORIGINAL MESSAGE: 
> On Fri, 01 Feb 2013 19:52:18 -0700, Lee wrote:
> 
> >
> >I've tried using a scope with my Kam+ and the scope with MMTTY. Neither one 
> >gives a perfect "+" (crosshair) indication. I'm wondering why that is so. 
> >Without a perfect crosshair pattern it would be difficult to get right on 
> >frequency.
> 
> REPLY: 
> If the crosshairs are there but not at a 90 degree angle, check your tones
> setting. Mark should be 2125 and space should be 2295. 
> 
> You will occasionally come across a station using 200 Hz shift instead of
> the standard 170 Hz. Those will not be at 90 degrees. Just split the
> difference and it should work unless your RX bandwidth is REALLY narrow,
> which it probably isn't. 
> 
> Bill, W6WRT

I only use FSK but the Mark is set for 2125 Hz in the Kenwood TS2000 with a 
170 Hz shift and normal polarity. I've seen this problem with my TS450 and 
Icom706 also. I thought that it was a problem with the scope mod I did on the 
Kam+ until I saw the same thing on the MMTTY scope.
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