Federal Jr. (Junior) Amplifier No. 20
Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY
- Country
- United States of America (USA)
- Manufacturer / Brand
- Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY
- Year
- 1922
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 108643
-
- alternative name: Federal Recorder || Federal Tel. & Radio || Federal T&T
- Brand: Orthosonic / Ortho-Sonic
Federal Bulletin No. 115-W August, 1922
Radio Digest Illustrated, 1922 Aug. 26, p. 9
- Number of Tubes
- 2
- Main principle
- Audio-Amplification
- Wave bands
- - without
- Power type and voltage
- Storage and/or dry batteries
- Loudspeaker
- - For headphones or amp.
- Material
- Metal case, TUBES VISIBLE
- from Radiomuseum.org
- Model: Federal Jr. Amplifier No. 20 - Federal Radio Corp. / Federal
- Shape
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 8.5 x 8.8 x 6 inch / 216 x 224 x 152 mm
- Notes
-
Made to match the Federal Jr. Crystal set.
- Source of data
- Radio Manufacturers of the 1920s, Vol 1
- Mentioned in
- Radio Collector`s Guide 1921-1932
- Literature/Schematics (2)
- Radio Digest Illustrated, 1922 Aug. 26, p. 9
- Literature/Schematics (3)
- Le Guide du Collectionneur TSF Biraud/Foster, Vol. I (page 173)
- Author
- Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.
- Other Models
-
Here you find 202 models, 90 with images and 129 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY