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subminiature tube radios

 

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Subminiature tube coat pocket radios
Tom Thumb models 528 & TT-600 & Firestone model TT-528

circa 1953/54


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 requirements: All require a 45 volt "B" battery. The all tube models; a 1.5 volt "A" battery, while the Hybrid requires a special 4 volt cell (which are *no longer available). These sets measure 6X4X1.5" and weigh (without batteries) 1, 1/4 lb.

be sure and visit the subminiature tube page
 

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