Wireless telegraphy was not greatly used in the early years of the war: the Allies liked their cables for telephone and telegraph. Besides, the machinery was cumbersome, the spark transmitters had limited range, and of course, wireless transmissions could be intercepted. Every message therefore had to be enciphered.
Enthusiasts can find a detailed report on Canadian wireless use from 1915 to the end of the war on the site of the Royal Canadian Signallers. (1)
The Field Service Pocket Book tells us that one wagon wireless station could communicate with another “at a maximum distance of 60 to 80 miles.” It could reach a pack wireless station 30 miles away, and those pack wireless stations could communicate with one another over 20 to 30 miles. (2)
(1) Steel, W. Arthur. General Report on Wireless Telegraph Communication in the Canadian Corps from February 1915 to December 1918. Captain Steel was the Corps Wireless Officer for Chief Signal Officer Canadian Corps, 16 April 1919. His report is in Library and Archives Canada.
(2) Field Service Pocket Book. 1914. 64
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