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Royal 500D 500-D Ch=8AT40 8AT40Z2

Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 60506) Radio
 
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 60507) Radio
 
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 60508) Radio
 
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 60509) Radio
 
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 60510) Radio
 
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 60511) Radio
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 2269508) Radio Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 2269507) Radio
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 57405) Radio Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 436287) Radio
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 436289) Radio Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 176817) Radio
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 176819) Radio Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 176818) Radio
Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 345982) Radio Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 436286) Radio
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Royal 500D 500-D Ch=8AT40 8AT40Z2; Zenith Radio Corp.; (ID = 2269508) Radio
Zenith Radio Corp.;: Royal 500D 500-D Ch=8AT40 8AT40Z2 [Radio] ID = 2269508 1400x1867
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For model Royal 500D 500-D Ch=8AT40 8AT40Z2, Zenith Radio Corp.; Chicago, IL
 
Country:  United States of America (USA)
Manufacturer / Brand:  Zenith Radio Corp.; Chicago, IL
alternative name
 
Chicago Radio Lab
Year: 1958/1959 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 8: 2N544 2N411 2N409 2N409 2N409 1N87G 2N407 2N407 2N407
Main principle Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 4 x 1,5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm
Power out 0.1 W (unknown quality)
from Radiomuseum.org Model: Royal 500D 500-D Ch=8AT40 8AT40Z2 - Zenith Radio Corp.; Chicago,
Material Modern plastics (no Bakelite or Catalin)
Shape Very small Portable or Pocket-Set (Handheld) < 8 inch.
Dimensions (WHD) 3.5 x 5.75 x 1.5 inch / 89 x 146 x 38 mm
Notes Semiconductors used in chassis 8AT40 (early): see list (Sylvania).
Semiconductors in chassis 8AT40Z2 (late): 2N247, 2N411, 3x 2N409, 1N87G, 3x 2N407.
The "types" 121-nn / 103-nn in the schematics are Zenith part numbers. They indicate the real EIA type(s) - by one or more manufacturers.
The 500D being the first high performane pocket radio had 8 transistors (an extra RF stage besides improved IF circuitry and others). That is 1 more transistor than the previous 500s used. It also got a new speaker grill. Case Nylon; The very early production did not have the D painted to the Front, but the words "long distance" were there (as with the later 500E).
Net weight (2.2 lb = 1 kg) 0.6 kg / 1 lb 5.1 oz (1.322 lb)
Price in first year of sale 75.00 $
External source of data Ernst Erb
Mentioned in Zenith Transistor Radios
Literature/Schematics (1) Transistor Radios 1954-68 (Antique Radio Magazine n.61, June-July 2004, page 53 (Ita/Eng). Free at Aldo Andreani's website.)
Documents regarding this model
  Radio a transistor tascabili americane: Zenith Royal 500 “Owl Eyes” (Per cortesia di L.Salvatore/ARM) 3327 KB


All listed radios etc. from Zenith Radio Corp.; Chicago, IL
Here you find 4264 models, 3890 with images and 3381 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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