David Griffith wrote:
Is there someone here who has built/designed an am/fm radio using
currently manufactured vacuum tubes? If so, please point me in the
right direction.
If def of "currently mfg'ed" is literal, you may have issues. Virtually
all the tubes which would make decent FM front ends / converters were
made in USA and EU; stress were.
Presently made, in general, covers only audio and similar. The quality
of contemporary "global mfg" tubes is basically poor with a few exceptions.
Sylvania, GE, Telefunken, Mullard, Raytheon, RCA, Philips etc are
history in this sector.
If you mean NOS, which number prob over 100 meg pieces, you can
build/recreate many things.
Look at a SAMS Photofact index for a circuit which appeals to you. It
will be easier to salvage parts such as variable caps, inductors, IF
xfmrs, etc from older donor radios than to buy or build new.
See:
tubesandmore.com
and
www.antiquewireless.org
Might be of help getting going.
GL es HNY,
Steve