• Country
• Germany

• Manufacturer / Brand
• Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München

• Year
• 1931 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 5482

• Number of Tubes
• 4

• Valves / Tubes
• REN804 REN1004 RE604 RGN1054

• Main principle
• TRF without regeneration

• Tuned circuits
• 1 AM circuit(s)

• Details
• Record Player (not changer)

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Protofon 2b - Siemens & Halske, -Schuckert

• Shape
• Console with any shape - in general

• Notes
• Im Siemens Protofon 2b kann anstelle der RGN1054 ersatzweise die RGN1064 verwendet werden.
  Eingebauter Falzmembran-Lautsprecher.

• Price in first year of sale
• 500.00 RM

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• FS-Bestückungstab. (wahrsch. m.Fehler)

• Other Models

• Here you find 2523 models, 2120 with images and 1334 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München