Jon Noring wrote:

So, rather than re-inventing the wheel, based on the general
requirements given above, what tube radio/tuner of yesteryear (from
the 1930's to 1960's) would make a good candidate as the starting-point
for the design of this new "Mark I Tube AM Tuner"?

I'll recommend at least one circuit to look at - Radio Craft ran a
series on a 30 tube "Super-Deluxe" radio - four chassis - tuner, IF, AF
and power - Seems like it had just about every "bell and whistle" an AM
receiver could have - for technology of the time- which as noted - was
getting pretty mature. I'm sure there are ideas that have come along
since that might make better sense now - but for a basic blueprint of a
build-it-yourself radio (including practical / reachable goals) - that
should be at the very least something to study.

I don't have those issues -- only the reprint of the March 1938 "50
Years of Radio" edition... which contained part 6 - the last part of the
construction series. So perhaps someone that does have there could pull
them - particularly the RF / IF sections - and see what's there (scan
post schematic / specs?????)...

--
randy guttery

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