• Land
• Grossbritannien (UK)

• Hersteller / Marke
• Marconi's Wireless Telegraph Co. Ltd.

• Jahr
• 1923/1924 ?

• Kategorie
• Kommerzieller Empfänger (auch Amateurbänder)

• Radiomuseum.org ID
• 344000

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• Anzahl Röhren
• 2

• Röhren

• Hauptprinzip
• Geradeaus oder Audion mit Rückkopplung; 1 NF-Stufe(n)

• Wellenbereiche
• Kurzwellen (nur KW)

• Betriebsart / Volt
• Trockenbatterien / 6;80;120 Volt

• Lautsprecher
• - nur für Ohrhörer!

• Material
• Metallausführung

• von Radiomuseum.org
• Modell: 2 Valve Short Wave Receiver - Marconi's Wireless Telegraph

• Form
• Tischgerät, Truhenform, meist mit Deckel (NICHT Schrägpult).

• Abmessungen (BHT)
• 430 x 255 x 210 mm / 16.9 x 10 x 8.3 inch

• Bemerkung

• This receiver matches the picture on page 56 of the January 13th, 1926 issue of "Wireless World". The picture heading states 'Short-wave receiver of the type used by Senatore Marconi in the short-wave experiments with the Poldhu station. Interchangeable coils produce a tuning range of 15 to 100 metres'.

  The "Marconi Review" No. 2 of November 1928 also refers to this receiver in the article: "A Chapter In The History Of The Marconi Beam II". Page 1 describes this receiver as follows: 'There were two receivers, designed by Mr. Mathieu, in use on the "Elettra." The first of these, a copper-screened two-valve instrument, having a waverange of 40 to 100 metres, was used for signal intensity tests, and employed, as shown in the circuit diagram, Fig. 5, an aperiodic aerial, a detector valve with reaction, a tuned grid circuit with vernier condenser, a low pass filter to isolate the telephone circuit from reaction effects, a low-frequency transformer and an audibility test circuit to which the telephone was connected. The test circuit consisted of an artificial line graduated in standard miles and providing a range of adjustment equivalent to 0 to 100 T.U.'

  Based on the picture, description and schematic, this may be the actual receiver used by Marconi during the short-wave tests conducted aboard his yacht, "Elettra". The serial number "1" stamped into the case also suggests that this was the initial prototype.

• Nettogewicht
• 16.4 lb (16 lb 6.4 oz) / 7.446 kg

• Literaturnachweis
• Wireless World (The), London (WW, 79) (January 13th, 1926, page 56)

• Literatur/Schema (1)
• - - Manufacturers Literature (The Marconi Review, No. 2, November 1928, page 1)

• Autor
• Modellseite von Gary Berg angelegt. Siehe bei "Änderungsvorschlag" für weitere Mitarbeit.

• Weitere Modelle

• Hier finden Sie 94 Modelle, davon 92 mit Bildern und 17 mit Schaltbildern.
  Alle gelisteten Radios usw. von Marconi's Wireless Telegraph Co. Ltd.