• Country
• United States of America (USA)

• Manufacturer / Brand
• Goodrich, B.F.; Akron,Ohio

• Year
• 1948 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 43276

• • Brand: Mantola

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

• Number of Tubes
• 6

• Valves / Tubes
• 1N5 1A7GT 1N5 1H5 3Q5 117Z6

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / AC/DC 117/ 90 & 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.25 inch = 13.3 cm

• from Radiomuseum.org
• Model: R662-N - Goodrich, B.F.; Akron,Ohio

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• 
  Photofact see under Trade name: Mantola. Sams photofact set 3 folder 463-33 date 8-46 features the Goodrich Mantola models R662 and R662N as the same schematic.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 15 = 1947 and before

• Mentioned in
• Beitman Radio Diagrams, Vol. 08, 1948

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 3, Folder 463-33)

• Other Models

• Here you find 113 models, 61 with images and 102 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Goodrich, B.F.; Akron,Ohio