[Elecraft] Best CW Pitch???

drewko1 at verizon.net drewko1 at verizon.net
Sat Sep 29 15:54:10 EDT 2007


On Sat, 29 Sep 2007 12:20:21 -0700, Jim Brown K9YC wrote:

>On Sat, 29 Sep 2007 18:56:26 -0000, Roelof Bakker wrote:
>
>>Two signals 40 Hz apart are much easier seperated at a pitch of 400 Hz than 
>>at a pitch of 800 Hz. At 800 Hz the difference is 5%. At 400Hz it is 10 %. 
>>This is the way our BSP (biological signal processor) handles it.
>
>Yes, this is very good advice.
>
>Jim Brown K9YC
>

Ok, that makes sense. 

Now what about weak signals in noise (no QRM): any idea which pitch is
better there? 

And I wonder about keying speed (element length): a shorter element
must carry better at a higher pitch I would think.

Of course, it doesn't matter much if your own ears have a problem with
the theoretical best pitch, i suppose.

73,
Drew
AF2Z



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