Marvelo Trio-Dynamic SR249
Radolek Co., Chicago
- Country
- United States of America (USA)
- Manufacturer / Brand
- Radolek Co., Chicago
- Year
- 1932 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 122282
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 10
- Main principle
- TRF (Tuned-Radio-Frequency but use of regeneration unknown)
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC)
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- from Radiomuseum.org
- Model: Marvelo Trio-Dynamic SR249 - Radolek Co., Chicago
- Notes
- push pull af output stage.
- Circuit diagram reference
- Rider's Perpetual, Volume 3 = 1933 and before
- Author
- Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.
- Other Models
-
Here you find 236 models, 118 with images and 63 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Radolek Co., Chicago