• Country
• United States of America (USA)

• Manufacturer / Brand
• Zephyr Radio Co.; Detroit, MI

• Year
• 1940 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 68383

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A7 6C5 6S7G 6T7G 41

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 25B5 skip band - Zephyr Radio Co.; Detroit, MI

• Shape
• Tablemodel, with any shape - general.

• Notes
• Sync.vibrator for +B.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Mentioned in
• Machine Age to Jet Age III

• Other Models

• Here you find 90 models, 26 with images and 76 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zephyr Radio Co.; Detroit, MI