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Hi Tom,
At some point (I don't know when) If you ordered the RCA stock number for those white coils you would recieve the improved brown ones. I replaced all the ones that I could still get with NOS replacements from Moyer Electronics in 2003. The peaking coils are the brown replacements, but a few RF chokes I had to use a cross reference to locate the proper replacements. For example, RCA stock # 74214 (180uh) can be replaced with a Miller #6180 or a Merit TV-184. They work fine, I have substituted them in place of good coils and saw no difference in the response. It may be true that the engineers wanted those coils made that way, but RCA never felt it was important enough to continue to make them that way..but then again they took many of these sets back and destroyed them also..giving the customer a 21ct55 or a CTC4.
The IF and Bandpass transformers in this set are originals, except for the 3.58 tank that I replaced with an NOS RCA.
I have a complete list of the replacements and stock cross if you would like.
Take care,
Kirk
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KStanki@aol.com
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