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TR-72

TR-72; Sony Corporation; (ID = 1199976) Radio
 
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TR-72; Sony Corporation; (ID = 55103) Radio
Sony Corporation;: TR-72 [Radio] ID = 55103 714x559
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For model TR-72, Sony Corporation; Tokyo:
the base front plate is not original
 
Country:  Japan
Manufacturer / Brand:  Sony Corporation; Tokyo
Year: 1956 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7: 2T51 2T52 2T52 2T65 2T66 2T85 2T85 1T23 1T23 1T42
Main principle Superheterodyne (common); 3 AF stage(s)
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 3 x 1,5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 10 cm = 3.9 inch
Power out 0.2 W (unknown quality)
from Radiomuseum.org Model: TR-72 - Sony Corporation; Tokyo
Material Wooden case
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 260 x 178 x 83 mm / 10.2 x 7 x 3.3 inch
Notes

This early transistor radio, Sony TR-72 or TR72 (TR 72) came after the TR-55 - in real quantities believed to be about 40,000 Sony TR-72 . It is a wooden table top radio. TR-72 arrived in January 1956. The circuit diagram shown is of a late version of the TR-72 An early circuit diagram of the TR-72 was shown in Electronics July 1956 "Transistor Circuity in Japan", equipped with 2T51, 2x2T52,2T61,2T62,2x2T61.

Net weight (2.2 lb = 1 kg) 1.9 kg / 4 lb 3 oz (4.185 lb)
Price in first year of sale 23'900.00 yen

Model page created by Ernst Erb. See "Data change" for further contributors.



All listed radios etc. from Sony Corporation; Tokyo
Here you find 3534 models, 3312 with images and 750 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.





  
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