[Elecraft] N0SS CW Filter Alignment

[RMariutto@aol.com]

In a message dated 6/5/02 9:28:30 AM Eastern Daylight Time, n4so@juno.com 
writes:


> What's the problem?
> 
> n0ss3.txt
> From: frastephen@comcast.net
> Date: Mon, 03 Jun 2002 23:04:20 -0400
> 
> Subject: N0SS CW Filter Alignment Using Spectrogram

I think my problem is that I am trying to do two things at the same time: 1) 
adjust the filters 2) set the K2 to the proper receive frequency.  I noticed 
that my receive frequency was about 200 hz lower than indicated on the 
display.  In the manual there is a proceedure for adjusting a variable cap 
that corrects this, boy is that cap touchy.     I noticed that the 500 & 600 
hz tone markers don't line up exactly with the respective marks on the 
Spectrogram when I shift from usb to lsb or (cw & cw reverse) . In other 
words, if I put the tone on 500 hz on lower sideband then shift the K2 to 
upper sideband it is sort of close to 500 hz, if I try I can't get both on 
500 hz . For instance on 10 mhz lower sidband displays 999982 & upper 
displays 999977.  On 15 mhz lower displays 1499973 & upper displays 1499967.  
Both about 50 hz off but different.  Does this make sense? I feel that I 
should get the frequency to display correctly before I set the filters , is 
this right?

Thanks again for all your help.

Ron N8SZY


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