[Elecraft] CWT Calibration

Rick NK7I rick.nk7i at gmail.com
Fri Jul 17 00:43:36 EDT 2020


On the presumption of a worst case (for me) simplex receiver condition 
for the other station, them filtered down to 50 Hz; I use XIT to not be 
zero beat (which used to be expected once upon a time) with no greater 
than 25 Hz offset (stay within that 50 Hz filter).  Then one must only 
look (P3) at the station the DX is currently working to see if plus or 
minus 25 Hz should be used.

Then watch patterns, does the other station move the receiver at all, 
switch plus for minus... is there a pattern?  (Random, never is).  
Paying attention to details means easier success rates.  ;-)

If split, use the same observations, but turn off XIT and use the other 
VFO for TX (allowing you to hear the station being worked as well).  
EVERY operator has a pattern, humans are just wired for consistency.  
Find it, predict it, make that contact.

73,
Rick NK7I dit dit

On 7/16/2020 9:27 PM, ktalbott at gamewood.net wrote:
> I use CWT to ensure that I do NOT zero beat the caller.  I want my signal to
> be at a tone noticeably above or below that of everyone else (very important
> to QRP op in a pileup). I haven't tried to quantify the hz/bar, I simply
> tune to around 5 ticks away and it seems to work well.
>
> Ken ke4rg
>


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