• Country
• United States of America (USA)

• Manufacturer / Brand
• Jewel Radio Corp.; New York, Long Island City, NY and East Newark, NJ

• Year
• 1946

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 183270

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• 12SA7 12SK7 12SQ7 50L6GT

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4.75 inch = 12.1 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Jewel 502A - Jewel Radio Corp.; New York,

• Shape
• Tablemodel, low profile (big size).

• Notes
• The SAMS Photofact folder 3/47, 475-14 shows the same schematic for the models 500A, 500B, 500C, 501A, 501B, 501C, 502A, 502B, 502C, 503A, 503B, 503C, 504A, 504B, 504C, 505A, 505B, 505C. The letter suffix tells us the tubes: A = 12SA7 (Converter), 12SK7 (IF Amp.), 12SQ7 (Det.-AVC-AF) and 50L6GT (power output). B = 14Q7, 14A7 or 12B7, 14B6 and 50A5 and C = 12BE6, 12BA6, 12AT6 and 50B5. The last number indicates the cabinet. We can be sure of the model 501, 502 and 504, because they are shown on the Photofact sheet. We are not sure about the 505 "Pin-up" clock radio - but they are listed - without a trace for a clock.

• Literature/Schematics (4)
• Photofact Folder, Howard W. SAMS (Date 3/47, set 475 (= 15), folder 14.)

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

• Other Models

• Here you find 111 models, 76 with images and 69 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Jewel Radio Corp.; New York, Long Island City, NY and East Newark, NJ