• Country
• United States of America (USA)

• Manufacturer / Brand
• Admiral (brand) Continental Radio & Television Co.; Chicago, IL

• Year
• 1957 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 83734

• • alternative name: Continental Radio & TV

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

• Number of Transistors
• 4

• Semiconductors
• 2N219 2N218 2N218 2N217

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 1 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / AA: 4 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 4P21 Ch= 4P2 - Admiral brand Continental

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Notes

• Admiral model 4P21 is a battery operated portable AM transistorized receiver.

  See also 4P22, 4P24, 4P28 which are different only in color.

• Price in first year of sale
• 75.00 $

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 18, 1958

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 374 folder 1 dated 10-57)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 3211 models, 1322 with images and 2578 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Admiral (brand) Continental Radio & Television Co.; Chicago, IL