• Country
• Czechoslovakia

• Manufacturer / Brand
• Sigma-Radio, Ing. B. Szathmary; Prag

• Year
• 1932/1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 117909

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 3

• Valves / Tubes
• E424N B409 1802

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 232 - Sigma-Radio, Ing. B. Szathmary

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Notes
• Das Gerät wurde auch als Selbstbausatz für 400 Kc angeboten. Alternative tubes: E424N, B443, 1802.

• Price in first year of sale
• 1,150.00 Kc

• Mentioned in
• Ceskoslovenský Radiosvet 1933, Heft 10 , Seite VII

• Author
• Model page created by Wolfgang Lill. See "Data change" for further contributors.

• 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