Portable B
Sigma-Radio, Ing. B. Szathmary; Prag
- Country
- Czechoslovakia
- Manufacturer / Brand
- Sigma-Radio, Ing. B. Szathmary; Prag
- Year
- 1936/1937
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 23249
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 3
- Main principle
- TRF with regeneration; ZF/IF 1 kHz; 1 AF stage(s)
- Tuned circuits
- 2 AM circuit(s)
- Wave bands
- Broadcast, Long Wave and Short Wave.
- Power type and voltage
- Storage and/or dry batteries / 2 + 54 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 cm = 3.9 inch
- Material
- Wooden case
- from Radiomuseum.org
- Model: Portable B - Sigma-Radio, Ing. B. Szathmary
- Shape
- Tablemodel, low profile (big size).
- Notes
-
The model "Portable" made by Sigma-Radio was available in at least two versions: one called "Portable B" with a portable suitcase and the "Portable" without that suitcase. But the portable without suitcase is in fact a radio powered by line current and has one tuned circuit less.
- External source of data
- Erb
- Source of data
- Ceskoslovenske prijimace 1933-1945, Baudys 1947
- Other Models
-
Here you find 49 models, 26 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sigma-Radio, Ing. B. Szathmary; Prag