• Pays
• Royaume Uni

• Fabricant / Marque
• Marconi's Wireless Telegraph Co. Ltd.

• Année
• 1923/1924 ?

• Catégorie
• Récepteur commercial (peut inclure bandes amateurs)

• Radiomuseum.org ID
• 344000

Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.

• No. de tubes
• 2

• Lampes / Tubes

• Principe général
• Récepteur TRF - par réaction (régénératif); 1 Etage(s) BF

• Gammes d'ondes
• OC uniquement

• Tension / type courant
• Piles sèches / 6;80;120 Volt

• Haut-parleur
• - Seulement pour écouteur

• Matière
• Boitier métallique

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

• Forme
• Modèle de table boitier avec vouvercle

• Dimensions (LHP)
• 430 x 255 x 210 mm / 16.9 x 10 x 8.3 inch

• Remarques

• 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.

• Poids net
• 16.4 lb (16 lb 6.4 oz) / 7.446 kg

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

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

• Auteur
• Modèle crée par Gary Berg. Voir les propositions de modification pour les contributeurs supplémentaires.

• D'autres Modèles

• Vous pourrez trouver sous ce lien 94 modèles d'appareils, 92 avec des images et 17 avec des schémas.
  Tous les appareils de Marconi's Wireless Telegraph Co. Ltd.