• Year
  • 1928–1930
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 5602

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF with regeneration; 2 AF stage(s)
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110 or 125 or 220 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Protos Rfe25 - Siemens & Halske, -Schuckert
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 470 x 360 x 180 mm / 18.5 x 14.2 x 7.1 inch
  • Notes
  • Siemens Rfe25 ist die Kombination des Empfängers Rfe27 mit eingebautem Falzmembran-Lautsprecher.

    3 Ausführungen: 110/125/220V; eckig [510,514,560]

    Preisangabe ohne Röhren.

    Preis 1929/30 225,-RM ohne Röhren.

  • Net weight (2.2 lb = 1 kg)
  • 10 kg / 22 lb 0.4 oz (22.026 lb)
  • Price in first year of sale
  • 245.00 RM +
  • Circuit diagram reference
  • Röhren in FS-Bestückungstabellen
  • Picture reference
  • Das Modell ist im «Radiokatalog» (Erb) abgebildet.

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The model Protos is part of the collections of the following members.

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