Portable tube radios "Tom Thumb 528", "Firestone TT-528" and tube-transistor radio "Tom Thumb TT-600 Hybrid" have been manufactured since 1956 by Manufactured by Automatic Radio Mfg.
,8caa42f5a9df53968033bf99609e44f6
Co., Boston.
,8caa42f5a9df53968033bf99609e44f6
Models are assembled according to the general superheterodyne scheme, except for the terminal cascade of the ULF.
,8caa42f5a9df53968033bf99609e44f6
In the first two models, radio tubes 5, 3 in the RF part and 2 in the terminal amplifier.
,8caa42f5a9df53968033bf99609e44f6
In the latest model, there are 3 radio tubes in the HF part and 2 transistors in the terminal VLF.
,8caa42f5a9df53968033bf99609e44f6
Food is different.
,8caa42f5a9df53968033bf99609e44f6
The first two models use two batteries, at 45 and 1.5 V. In the latest model, one at 45 and one at 4 V. The first two receivers have a maximum output power of 80 mW, the last 120 mW.
,8caa42f5a9df53968033bf99609e44f6
Dimensions of radio receivers 152x95x40 mm.
,8caa42f5a9df53968033bf99609e44f6
,null,ru,null,null,null,null