• Country
• Great Britain (UK)

• Manufacturer / Brand
• Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)

• Year
• 1942/1943 ?

• Category
• Amateur TRX: Transmitter/Receiver (and Transceiver)

• Radiomuseum.org ID
• 325823

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• 7Q7 7H7 7H7 7C5

• Number of Transistors

• Semiconductors
• Selenium-Rectifier Vibrator

• Main principle
• Transceiver; ZF/IF 600 kHz

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Line / Storage batteries (perhaps also batteries) / AC 100-130; 200-250 / DC 6 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Transceiver in suitcase - Émetteur-Récepteur en valise A MK. II / A MK. II* - Marconi Co. Marconiphone,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 370 x 120 x 250 mm / 14.6 x 4.7 x 9.8 inch

• Notes

• Transmitter-Receiver type A MK.II or A MK.II* in suitcase, made in England by the Marconi Co., parachuted in France for the "Resistance" network during the Second World War. Instructions and diagrams in French.

  The transceiver comprises the following modules:

  Vibro-converter box
  This module is equipped with a vibrator and connects an external 6 V battery to the internal AC mains module. The converter is an external box, not contained in the suitcase.

  AC mains module
  The mains transformer has 5 taps: 100, 120, 200, 220 and 240 V. Additionally there is a +10 V setting to cover voltages between and above those mentioned. The module uses two type 4c/82 selenium rectifiers.

  Receiver module
  Tubes: 7Q7, 7H7, 7H7
  Frequency range: 3 - 4.5 MHz and 6 - 9 MHz
  Intermediate frequency: 600 kHz

  Transmitter module
  Tube: 7C5
  Frequency range: 3 - 4.5 MHz and 6 - 9 MHz
  RF power: 6 W on the 3 - 4.5 MHz range, and 4 W otherwise

  Currently, the differences between types A MK.II and A MKII* are unknown; the technical papers are valid for both these versions.

  ---

  Émetteur-Récepteur type A MK.II ou A MK.II* fabriqué en Angleterre et parachuté en France pour les réseaux de la "Résistance" durant la seconde guerre mondiale.

  Notice et schéma en Français.

• Mentioned in
• Musée de la Radio, Marcel Cocset (page 171)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Literature/Schematics (2)
• Wireless for the Warrior; L.Meulstee (Vol. 4)

• Author
• Model page created by Bruno Ruiz. See "Data change" for further contributors.

• Other Models

• Here you find 501 models, 334 with images and 317 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)