[Elecraft] K2 Filter Question

[Don Wilhelm]

  Curt,

You observations are likely to be correct, but I would check the 
centering using Spectrogram or similar just in case your audio "ears" 
are not telling you the whole story.

For instance, if you have a bad crystal in the variable IF filter, there 
would be some variation in the filter passband and that would lead you 
to erroneous conclusions about the filter performance.

73,
Don W3FPR

On 10/13/2010 10:08 PM, Curt wrote:
> Thanks Don,
>
> If the center frequencies were off, what would be the behavior tuning
> through a CW signal?  As I tune through a signal, the highest strength
> happens about halfway through the respective width, at an audible frequency
> that beats with the sidetone frequency in "spot".  I would think if the
> center were off, then the maximum would happen somewhere away from the
> center frequency.
>
> 73, Curt KB5JO
>