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This set replaced the awkward and slow-produced No 1 Set in the run-up to the Second World War. First ordered in 1935, it went into production in 1938. The No 11 Set and No 9 Set, intended for tanks but used on the ground, were the main communications of the British Army for the early part of WWII. It was used by the Long Range Desert Group. It was also used by the Germans, who captured several sets it France.
The No 11 was used in tanks but replaced in this role by the upgraded No 9 Set, the No 19 Set, in 1942.
The No 11 Set introduced the combination of Transmitter and Receiver circuits into a single unit with a single tuning control to simplify netting. It also had the capacity for remote-control from up to 400m and a remote aerial at up to 10m, making it a harder target and more convenient to use.
Power from batteries or low- or high- power (6V or 12V) supply units gave outputs of 0.6W to 4.5W and ranges between 3 and 20 miles with the use of 6ft or 9ft aerials. The set itself, 8.5 x 19.5 x 12 inches, weighs 43 lb; the complete Low and High Power stations weigh 180 and 216 lb.
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ONE OF THE MUSEUM'S No 11 SETs
IN THE
LONG RANGE DESERT GROUP
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