[Elecraft] K2 Toroids Latest?

[Deni F5VJC]

Hi Vic and all.
 
I have kept my K2 (1188) up to date with all the A/B mods, however at times
I see references such as the one below about T7  where a  toroid may have
been changed from the original windings to a revised spec. Are these
documented anywhere, which toroids are now different and why?
 
Thanks,
 
73, Deni
 
F5VJC / GM3SKN
 
K21188
 
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It looks fine, although I would move the two wider filters a bit to the
right.
There looks like about 6-8 db difference in attenuation between the widest
and
narrowest filters, which is probably on the high side of normal (although
this
tends to vary).  I see about 4 db on mine, which is #709 but has had the
crystals replaced and T7 rewound to current spec.
 
I would be interested in knowing how much difference in attenuation others
are
seeing.  I know that K1JD has an ANCIENT K2 (field test vintage) which has
zero
db difference!
 
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco