Subminiature tube coat pocket radios
Tom Thumb models 528 & TT-600 & Firestone model TT-528
circa 1953/54
click on the small images below for enlarged views
Tom Thumb 528
Tom Thumb 528 insides
Tom Thumb TT-600
Hybrid
Firestone TT-528
The Automatic Radio Corporation's
models of
subminiature tube radios: the
"Tom Thumb" 528 & the Firestone version TT-528 have a full
compliment of
subminiature tubes
The "Tom Thumb" TT-600 although labeled as a transistor radio is
actually a hybrid with three
subminiature
tubes
and two transistors. Battery requirement: All required a 45
volt "B" battery, the all tube models "A" battery 1.5 volts
while the "A" battery of the Hybrid required a special 4 volt
cell. These sets measure 6X4X1.5" and weigh (without batteries) 1,
1/4 lb.
