[WT-support] CW Speed fluctuations

Olivier F5MZN olecam at f5mzn.org
Wed Jul 25 13:15:35 CEST 2007


Hello,

EA4TX - Pablo wrotte:

> I know that it was asked, but I don't remember if it was already fixed.
> 
> I use a micro KEYER (microHAM) that includes a Winkey. During the IARU
> Contest, sometimes the speed of the CW in increased during some exchanges,
> and inmediately on the next transmision, the speed goes again to their
> value.
> 
> As an example to clariry it, if the WT speed is 32, sometimes the next
> message goes to 36 or so, and automatically on the next transmision is again
> back to 32. During the contest, I modify the Setup so instead CW via WinKey
> to CW via DTR and this problem was solved, so clearly the problem is located
> on the WinKey feature... Someone could suggest me to use always this mode
> (CW via DTR) but this generates another problem when the computer has the
> CPU over loaded... so the CW is not stable.

The one who will first find a way to always repeat that problem will hit 
the Jackpot! This is unfortunately an old known problem which I never be 
able to fix yet.

I had a talk with Jozef OM7ZZ at Fried Hamfast. He show me a way to get 
the WinKey speed to be out of sync with Win-Key but, as astonishing as 
this might sound, this wasn't affecting the CW speed!...

73,
-- 
Olivier / f5mzn


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