[Elecraft] K3 - Still having pitch problems with 250HZ filter

Don Wilhelm w3fpr at embarqmail.com
Tue Sep 4 09:51:48 EDT 2012


Even though it is an 8 pole filter which *theoretically* has zero 
offset, you may have to apply some filter offset in the filter setup 
menu.  You can just guess, or you can use a broadband noise generator at 
the antenna input and look at the audio output with an audio spectrum 
analyzer such as Spectrogram running on a PC to see where the filter 
passband is placed.  The amount by which it is offset from the frequency 
set in the sidetone pitch menu is the amount of offset that should be 
entered.

73,
Don W3FPR

On 9/4/2012 7:34 AM, george at gloria.us wrote:
> I am still having pitch problems with my 250HZ, 8 pole CW filter.
>
> Have tried changing the side tone frequency and going into filter setup;
> but, the received CW pitch thru the filter is still too high.  I wish to
> make the received pitch lower.
>
> Anyone have any other suggestions?
>
> George
> K2CM
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