• Country
• Switzerland

• Manufacturer / Brand
• Bell Standard Telephon & Radio AG (STR), Telephone Manufacturing Co,; Zürich, Bern etc.

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 11442

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

• Number of Tubes
• 5

• Valves / Tubes
• EK2 EF5 EBC3 CL2 CY1

• Main principle
• Superheterodyne (common)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• AC/DC-set

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 537 Allstrom - Bell Standard Telephon & Radio

• Notes
• Verkauf Radio-Steiner (wohl "Nachzügler" obwohl Mod. 537, da EK2 = CH 1937)

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Die «Thali Schemasammlung» führt das Modell.

• Other Models

• Here you find 11 models, 5 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Bell Standard Telephon & Radio AG (STR), Telephone Manufacturing Co,; Zürich, Bern etc.