- Country
- United States of America (USA)
- Manufacturer / Brand
- Zephyr Radio Co.; Detroit, MI
- Year
- 1937
- Category
- Car Radio, perhaps also + sound player/recorder
- Radiomuseum.org ID
- 68404
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 6
- Main principle
- Superhet with RF-stage; ZF/IF 262 kHz
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6.5 inch = 16.5 cm
- Material
- Metal case
- from Radiomuseum.org
- Model: 3M7 - Zephyr Radio Co.; Detroit, MI
- Shape
- Chassis only or for «building in»
- Dimensions (WHD)
- 9 x 7 x 8 inch / 229 x 178 x 203 mm
- Notes
-
Vibrator for +B. Choice of single or dual speaker. Tunes 175-550 meters.
- Price in first year of sale
- 44.95 $
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 10 = 1939 and before
- Literature/Schematics (3)
- -- Original prospect or advert (Zephyr Folder new models for 1937.)
- 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