• País
• Gran Bretaña (GB)

• Fabricante / Marca
• Marconi's Wireless Telegraph Co. Ltd.

• Año
• 1923/1924 ?

• Categoría
• Receptor profesional (puede incluir bandas de aficionados)

• Radiomuseum.org ID
• 344000

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

• Numero de valvulas
• 2

• Válvulas

• Principio principal
• RFS con reacción (regenerativo); 1 Etapas de AF

• Gama de ondas
• Onda Corta solamente

• Tensión de funcionamiento
• Pilas / 6;80;120 Volt

• Altavoz
• - solamente tiene Auricular (mini) de oido

• Material
• Metálico

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

• Forma
• Sobremesa, caja, normalmente con tapa (panel no inclinado).

• Ancho, altura, profundidad
• 430 x 255 x 210 mm / 16.9 x 10 x 8.3 inch

• Anotaciones

• 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.

• Peso neto
• 16.4 lb (16 lb 6.4 oz) / 7.446 kg

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

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

• Autor
• Modelo creado por Gary Berg. Ver en "Modificar Ficha" los participantes posteriores.

• Otros modelos

• Donde encontrará 94 modelos, 92 con imágenes y 17 con esquemas.
  Ir al listado general de Marconi's Wireless Telegraph Co. Ltd.