Quote:
Originally Posted by Findm-Keepm
I was under the impression that Zenith used RCA and Mullard semis. The Zenith cross reference lists only one Amperex tranny, not used in the 1000 or 3000. Do you have any transistors so marked? All of mine clearly have RCA's EIA code of 274 on them, with one TO-7 transistor having RCA and 274 marked about 120 degrees opposite each other.
Cheers,
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This info comes from the Antique Radio Forum the person discussing it said the Zenith marked transistors he had where identical to the Amperex down to the tooling marks, he did not elaborate beyond that. This does not mean Zenith did not use other brands. The ones that are in my 1000, and 3000 seem to be RCA's. I can read the Zenith part number on them but nothing else.