Thankyou to N0SS for the document here
http://www.n0ss.net/k2_filters_using_gram_v5r17.pdf - I discovered that
I had not tuned the L32 slug properly by using my ear. This document
also resolved some attenuation on the CW filter compared to my OPT1
filter. I was starting to suspect my CW filter xtals may have been the
reason for this.
So thanks N0SS - my K2 has had a bit of a rebirth.
Dave
VK2NA
S/N 3222 K2/1000 in Newcastle, Australia.
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