Short Wave Tuner Mark III* (Mk 3*) (military)

Johnson and Phillips Ltd. (J & P); Charlton, London

  • Anno
  • 1918 ?
  • Categoria
  • Radio a galena (a cristallo o a diodo, senza valvole o transistores)
  • Radiomuseum.org ID
  • 308244

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

 Specifiche tecniche

  • Principio generale
  • Rivelazione a galena / semi-conducteur
  • Gamme d'onda
  • Solo onde medie (OM).
  • Tensioni di funzionamento
  • Batterie a secco / 2 x 3 Volt
  • Altoparlante
  • - Per cuffie o amplificatori esterni
  • Materiali
  • Pelle / stoffa / plastica ma con altro materiale sottostante
  • Radiomuseum.org
  • Modello: Short Wave Tuner Mark III* - Johnson and Phillips Ltd. J &
  • Forma
  • Soprammobile a cassapanca o cassetta, solitamente con coperchio (NON a leggio)
  • Dimensioni (LxAxP)
  • 350 x 200 x 310 mm / 13.8 x 7.9 x 12.2 inch
  • Annotazioni
  • In robust rectangular, black canvas covered wooden box with handle and removable hinged lid. After opening the lid we see an ebonite panel with two rotary switches, two double knife switches, two tuning knobs, a clutch control, a potentiometer control, a small knife switch, a push button for a buzzer, a Perikon detector with crystal, a carborundum detector, eight copper terminals and four wires (two white and two black) equipped with spade terminals. There are two lockable compartments, one in the lid and one next to the front plate. A battery can be placed there that provides pre-tension on the crystal and power for the buzzer. Above that there is a compartment for the headphones. The compartment in the lid contains twelve spare mounted mineral crystals for use in the Perikon detector. There is a nickel-plated circular holder in the lid for a pocket watch and wooden brackets for holding maps.

    The wave range is 100-700 meters.

    There is also a previous version Short Wave Tuner Mark III (without asterisk), introduced in 1916.

  • Peso netto
  • 7.3 kg / 16 lb 1.3 oz (16.079 lb)
  • Letteratura / Schemi (1)
  • -- Schematic
  • Autore
  • Modello inviato da John Koster. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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Collezioni

Il modello Short Wave Tuner fa parte delle collezioni dei seguenti membri.

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