[Elecraft] K-3: RTTY Dual Passband Question

Dave Hachadorian k6ll at arrl.net
Wed Mar 3 15:02:41 EST 2010


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From: <RLVZ at aol.com>
Sent: Wednesday, March 03, 2010 11:47 AM
To: <elecraft at mailman.qth.net>
Subject: [Elecraft] K-3: RTTY Dual Passband Question

> Question: If you don't normally use Dual Passband while in RTTY 
> Mode,  then
> is it true that you need to be careful where the "SHIFT" 
> control is set?
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Yes, you need to set SHIFT such that the MMTTY FFT display is 
symmetrical about the mark and space frequencies (the vertical 
yellow lines on the FFT display). Set WIDTH as low as possible 
without attenuating the mark and space frequencies. Set K3 shift 
control to fine granularity (config/pb ctrl/shift=.01)

In MMTTY, turn off NET, AFC, ATC. Make sure MMTTY MARK frequency 
matches K3 PITCH.

Dave Hachadorian, K6LL
Yuma, AZ 



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