Deni,
T7 is the only transformer that will make any difference. If it is wound
with a 13:3 turns ratio it can be rewound with a 20:5 ratio for a better
impedance match to the IF filter.
The number of turns on bifilar wound T3 has been reduced in later K2s, but I
have not noticed any difference
-Original Message-
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
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