[Elecraft] Filter Crystals
John, KI6WX
[email protected]
Mon Dec 16 23:08:27 2002
The 2nd Xtal Filter Mod
<http://www.elecraft.com/Apps/new_fil_docs/k2_2nd_xfil_ssb_mod.pdf> is
necessary if you want a flat response on SSB. The new Xtals do not fix that
problem. An improved version of the 2nd Xtal Filter Mod is included in the
Rev B update.
-John
KI6WX
>
> BUT, this weekend, I did the BFO mod, and the 14 filter crystals. What an
> enormous difference. The filter is as flat as a table on top, and with
just
> a slight adjustment of L34, is identical for LSB and USB.
>
> Unless you can confirm that your K2 was shipped with a matched set of 14,
I
> would highly recommend the mod. I also bought the parts kit for older 2nd
> filter mod (the one that switches in and out on rcv to xmt). Completely
> unnecessary with the new crystal set.
>