A nice tube radio with extra B+ on the audio output stage:
My H458T6 is just like this except brown trim instead
of black around the front. Using a 19HR6 tube in place of the
12BA6 in the IF amp stage improves the sensitivity of this set.
may be easily converted to 240VAC operation by removing the
powerline (mains) connection from the center of the
autotransformer to the top (rectifier plate). Leave the
heater string connected to the center tap.
the diagram here. Or use a 115/230 switch from an old PC power
supply to make it switchable (add a half amp fuse in the mains/powerline feed, so it will
blow if the switch was mistakenly set to 115V and the set fed 230V!).
It's not a television set!
What looks like my H211L5 set in the kitchen of the TV show "Good Times", on the left of the rightmost picture above.
. FM only:
Another FM only set:
A quarter track reel 2 reel machine I had back in the mid 1970's. Tubes and transistors.
An Aussie Tasma "baby" model 1001:
The little map of Australia on the dial is a nice touch.
Just like my first radio, the
This one above is the 8 transistor version. A converter instead of a
mixer transistor and an oscillator transistor, and only one instead
of two audio driver transistors.
This above radio has an RF stage with 3 gang tuning cap. A good
My first CD player bought in 1985 for about $400. It proclaims:
"Yamaha Natural Sound Compact Disc Player CD-X2", "Original Music Processing LSIs",
"Double Resolution Digital Filter". Which means 2X oversampling.
Zenith tube AM/FM's
An earlier version
(right) of the above set had the old 45MHz FM
band included. Also the set below had this band.
In 1945 the FCC decided that
FM would have to move from the established
42 - 49 megacycle pre-war band to a new band at 88 - 108 megacycles,
to make way for
Both in frequency spectra and
consumer dollars. RCA's David Sarnoff in particular wanted FM to
"go away" so the public wouldn't be distracted from
buying his latest up and comming product: televisions.
More than half a million FM receivers and
some 50 transmitting stations would be
Model 7H820H, also has 45MHz FM
This Zenith 45MHz FM radio model 8H023 (just got one) looks very
similar to the 8H034Z above.
This below Zenith had its selenium rectifier replaced by a silicon bridge. Details here.
Transistor and solid state:
More AM tube radios
My grand aunt had one of these
A 3 band SW and MW set:
Nice solid state hot chassis AM/FM with scrolling dial and 6 gang (3 AM, 3 FM) tuning cap: