- Country
- Czechoslovakia
- Manufacturer / Brand
- Microphona (Mikrofona), Bratri Knotkove, Praha-Strasnice
- Year
- 1937/1938
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 23111
-
- alternative name: Telefony Microfona
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 6
- Main principle
- Superheterodyne (common); ZF/IF 485 kHz
- Tuned circuits
- 7 AM circuit(s)
- Wave bands
- Broadcast, Long Wave and Short Wave.
- Power type and voltage
- Alternating Current supply (AC) / 110-240 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: MK409 - Microphona Mikrofona, Bratri
- Dimensions (WHD)
- 458 x 390 x 265 mm / 18 x 15.4 x 10.4 inch
- Notes
- variable Bandbreite
- Net weight (2.2 lb = 1 kg)
- 16.1 kg / 35 lb 7.4 oz (35.463 lb)
- Price in first year of sale
- 2,150.00 Kc
- External source of data
- Erb
- Source of data
- Ceskoslovenske prijimace 1933-1945, Baudys 1947
- Other Models
-
Here you find 69 models, 52 with images and 45 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Microphona (Mikrofona), Bratri Knotkove, Praha-Strasnice
Collections
The model is part of the collections of the following members.