- Country
- Czechoslovakia
- Manufacturer / Brand
- Tesla; Praha, Bratislava etc.
- Year
- 1954–1957
- Category
- RF (Radio Frequency-) Amplifier
- Radiomuseum.org ID
- 78013
-
- Brand: Supraphon
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 2
- Main principle
- Radio Frequency Amplification only
- Tuned circuits
- 3 AM circuit(s)
- Wave bands
- Wave Bands given in the notes.
- Power type and voltage
- Powered by external power supply or a main unit. / 180 & 6,3 Volt
- Loudspeaker
- - - No sound reproduction output.
- Material
- Metal case
- from Radiomuseum.org
- Model: 4902 - Tesla; Praha, Bratislava etc.
- Shape
- Chassis only or for «building in»
- Notes
- Zusatz-HF-Vorstufe für Fernseh-Empfänger 4001A und 4002A bei schlechten Empfangsverhältnissen. Fest auf 48,5 MHz eingestellt. Variante 4902b für 58 MHz. Versorgungs-Spannung aus dem Hauptgerät (6,3 V/0,35 A, 180 V/18 mA). Nachfolger von 4901.
HF-Preamplifier for TV sets 4001A and 4002A. Supply voltages from TV set.
- Author
- Model page created by Bernhard Nagel. See "Data change" for further contributors.
- Other Models
-
Here you find 1832 models, 1140 with images and 643 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Tesla; Praha, Bratislava etc.