[Elecraft] Filters

[Don Wilhelm]

James,

If your CW filter shows multiple peaks with the bandwidth at 1000 Hz and
less, then yes, your crystals are 'funky' and should be replaced.  Also, the
SSB OP1 filter should have a smooth looking passband, but the wider widths
with the variable filter will normally look very 'ragged' - although hey are
usually useable for SSB reception if the passband is properly positioned.

73,
Don W3FPR

-----Original Message-----

The filters in my K2 have always been a little weird. Tuning around,
the signal would always peak at the wrong point and then drop when it's
at the correct sidetone frequency. I lived with it for a while. I
finally took some initiative and tried it out with spectrogram and
using the Elecraft noise generator. My findings were a bit suprising.
The filter shape has multiple peaks and is not uniform at all..
compared to a few others I have seen. I compared it to another friends
K2 and it was confirmed - my filter shape is funky.

What should I do? Do I need to buy new crystals? Is something out of
whack?

Thanks,

James Kern KB2FCV

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