Crystal filters

Posted by ac0h on Feb 28, 2009; 4:41pm
URL: http://elecraft.85.s1.nabble.com/Crystal-filters-tp2401278.html

Hello all,

I'm at the end of my yearly K2 alignment and have come to the crystal
filters part.

Currently I have CW filters of 1.5K, 750, 400, and 250 with a side tone
of 600Hz.

On SSB I have OP1, 2.1, 1.8 and 1.6. I'd love some spectrogram screen
shots showing how people have theirs setup. Mine are all pretty much
centered between 300Hz and 2500Hz. I know Don, W3FPR says move the -3db
low end "shoulder" of the bandpass to 300Hz but a screen shot would be
helpful.

I'm going to setup and use my RTTY filters for digi modes and need some
guidance on suggested bandwidths and center frequencies.

Thanks.

--
R. Kevin Stover, ACØH
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