4420 Ch= 7-J
Spiegel Inc. (Continental); Chicago
- Country
- United States of America (USA)
- Manufacturer / Brand
- Spiegel Inc. (Continental); Chicago
- Year
- 1937
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 59408
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 7
- Main principle
- Superheterodyne (common); ZF/IF 456 kHz
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast, Short Wave(s) and Police.
- 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)
- from Radiomuseum.org
- Model: 4420 Ch= 7-J - Spiegel Inc. Continental;
- Notes
- Farm radio. Sync. vibrator for +B.
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 9 = 1938 and before
- Literature/Schematics (1)
- Riders 9-19
- Other Models
-
Here you find 1279 models, 552 with images and 1043 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Spiegel Inc. (Continental); Chicago