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TR-1820; Sony Corporation; (ID = 1684048) Radio
TR-1820; Sony Corporation; (ID = 1549585) Radio TR-1820; Sony Corporation; (ID = 1549588) Radio
TR-1820; Sony Corporation; (ID = 1549587) Radio TR-1820; Sony Corporation; (ID = 682065) Radio
TR-1820; Sony Corporation; (ID = 682066) Radio TR-1820; Sony Corporation; (ID = 682067) Radio
TR-1820; Sony Corporation; (ID = 1549589) Radio TR-1820; Sony Corporation; (ID = 1549590) Radio
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TR-1820; Sony Corporation; (ID = 1549585) Radio
Sony Corporation;: TR-1820 [Radio] ID = 1549585 900x525
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For model TR-1820, Sony Corporation; Tokyo:
Sony TR-1820.eBay item number: 271307453765 October 2013.
Country:  Japan
Manufacturer / Brand:  Sony Corporation; Tokyo
Year: 1964 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 6: 2SC73 2SC76 2SC76 2SD65 2SB379 2SB379 1T23
Main principle Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Dry Batteries / 4 x 1,5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.5 cm = 2.2 inch
Power out
from Model: TR-1820 - Sony Corporation; Tokyo
Material Plastics (no bakelite or catalin)
Shape Very small Portable or Pocket-Set (Handheld) < 8 inch.
Dimensions (WHD) 150 x 85 x 38 mm / 5.9 x 3.3 x 1.5 inch
Net weight (2.2 lb = 1 kg) 0.280 kg / 0 lb 9.9 oz (0.617 lb)

Model page created by Salvador Galan-Ocaña. See "Data change" for further contributors.

All listed radios etc. from Sony Corporation; Tokyo
Here you find 3567 models, 3420 with images and 754 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.