• Country
• Czechoslovakia

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

• Year
• 1940/1941

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 23272

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

• Number of Tubes
• 4

• Valves / Tubes
• EF11 EF12 CL4 CY1

• 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
• AC/DC-set / 120-220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 22 cm = 8.7 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Melodie U I - Sigma-Radio, Ing. B. Szathmary

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 515 x 285 x 230 mm / 20.3 x 11.2 x 9.1 inch

• Notes
• Wellenbereiche: KW 19...50 m; MW 200...600 m; LW 750...1800 m. (Pat. LIC. C.M.63697)

• Net weight (2.2 lb = 1 kg)
• 7.7 kg / 16 lb 15.4 oz (16.96 lb)

• 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