Doublette M7A (M7,7A,S7)

Mediator; La Chaux-de-Fonds

  • Year
  • 9999/9999
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 12296

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 128 kHz
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-240 Volt
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet. / Ø 22 cm = 8.7 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Doublette M7A - Mediator; La Chaux-de-Fonds
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 420 x 490 x 300 mm / 16.5 x 19.3 x 11.8 inch
  • Notes
  • var.BBr. [Ringiers U-B 9.1.37]; Unterschiede 7A, M7, S7 ??
  • Price in first year of sale
  • 415.00 SFr
  • External source of data
  • E. Erb 3-907007-36-0
  • Source of data
  • Radiokatalog Band 2, Ernst Erb
  • Circuit diagram reference
  • Die Tungsram-Tabellen führen das Modell auf.
  • Picture reference
  • Das Modell ist im «Radiokatalog» (Erb) abgebildet.

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