Heinz Schnait <oe5eep@...>
Have a look at messages 124 and 131.
I found a set of 4 crystals within 30 Hz and they are doing fine for
SSB. I have posted a plot of the resulting filter passband in the
files section. Look for BITX20_10MHz_crystalfiler_2.sxc.pdf
73 Heinz, OE5EEP
--- In BITX20@..., "eternalesquire" <eternalsquire@c...>