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History of the manufacturer  

Marconi's Wireless Telegraph Co. Ltd.

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Name: Marconi's Wireless Telegraph Co. Ltd.    (GB)  
Abbreviation: marconi-wi
Products: Model types Tube manufacturer
Summary:

In 1897 Marconi registered the company Wireless Telegraph and Signal Company which in 1900 was renamed Marconi's Wireless Telegraph Company, Ltd (MWCT).

MWCT was taken over by English Electric in 1946. In 1968 English Electric merged with the General Electric Company (GEC). In 1999 GEC was renamed Marconi plc, which in turn became Marconi Corporation plc in 2003.

Founded: 1897
History:
In 1897 Marconi registered the company Wireless Telegraph and Signal Company and in 1898 the first wireless factory was set up in Chelmsford. In 1900 the company was renamed Marconi's Wireless Telegraph Company, Ltd (MWCT). Marconi's first aim in perfecting communication without wires was to break the isolation of those at sea. When the Titanic struck an iceberg and sank in 1912, the loss of life was truly terrible, but those who survived owed their lives to the distress calls from the Marconi wireless equipment on board. MWCT was recognised as the pioneers of trans-oceanic and maritime wireless services. In the beginning of the 1920´s MWCT had evolved the only aircraft radiotelephone organisation in the world, and in the 1930´s they were leading the development of transmitters/receivers for the airlines. At the outbreak of world war two MWCT was given the responsibility to design and produce new radio equipment for the Bomber Command and the wellknown transmitter/receiver T1154/R1155 was born. During the years Marconi founded many new companies and subsidiaries, and for consistency all Marconi models in RMORG are listed under Marconi Co. Marconi's Wireless Telegraph Company was taken over by English Electric in 1946. In 1968 English Electric merged with the General Electric Company (GEC). In 1999 GEC was renamed Marconi plc, which in turn became Marconi Corporation plc in 2003.


Some models:
Country Year Name 1st Tube Notes
GB  15 Crystal Receiver 0.5 KW Field Station   Receiver as part of the 0.5 kW field station 
GB  11/12 Wavemeter   Marconi Wireless Wavemeter Wave length range: 200-900 meters 
GB  14 W/T Transmitter Type 52b   Military Spark Transmitter,  W/T Transmitter Type 52b Emetteur à étincelles 
GB  16 Receiver Amplifier 71 + Tuner C-31A + Slide Tunin V24  Receiver assembled by amplifier type 71, tuner-detector C-31A and Slide Tuning coil C-31A 
GB  17 3 Valve Amplifier Type A Mk IV R_England  A military 3 valve Marconiphone Amplifier marked Type A. Mk IV, W/T Factory W.D. Teddingto... 
GB  10 Condensateur variable 190662    
GB  10 Change over Switch 115   Some sort of change over switch (Inverseur pour télégraphe)     
GB  20 Amplifier and Detector Type 55F QX  Amplifier and Detector. Wave Range 500 - 3000 metres. Détecteur et amplificateur BF. 
GB  09 Direct Reading Decremeter   A portable Decrement Meter. Designed to measure the damping of high frequency circuits and... 
GB  20 Receiver unknown V24  Receiver for two wave length: 600m - 1800m (160kHz - 500kHz) 300m - 700m (430kHz - 1... 
GB  15 Trench Set W/T 50 Watt [with change over switch]   Spark Transmitter 50 W - Receiver 350 meters The WWI 50 Watt Trench set was built by... 
GB  15 Tuner Type 70    

[rmxhdet-en]

Further details for this manufacturer by the members (rmfiorg):

from Svenska: Motala Rundradiomuseum, sändarehallen Motala 150 KW (1935-1961)
Author: Holger.Ellgaard
tbn_gb_marconis_wireless_telegr.jpg

  
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