No 11 Wireless Set
Wireless Set No. 11 was a portable transceiver developed in 1938 for use as a general purpose low power set by the British Army. It replaced the No. 1 wireless set which first saw service in 1933. Used as a vehicle station (truck/AFV), ground station and an animal pack station. Range up to 20 miles. A very successful design but superseded by No. 19 and 22 sets in 1942. Approximately 18,000 of the #11 sets were built in the UK.
SPECIFICATIONS
Modes: R/T and CW
Frequency Range: Frequency range 4.2 to 7.5 MHz
Power Output: 0.6W to 4.5 watts
Range: Up to 20 miles with the use of a 9 ft aerial.
Frequency Control: Master Oscillator
Dimensions: 8.5 x 19.5 x 12 inches
Weigh 43 lb; the complete Low and High Power stations weigh 180 and 216 lb respectively.
Circa: First units produced in 1938 in the UK. Start of Canadian production not known at this time.Comment: 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 up to 400m and a remote aerial up to 10m away from the set.
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| No. 11 wireless set. The power supply (not shown) is fitted to the right side of the set. This example has been repainted and is awaiting the installation of nameplates. There is also a missing connector at the centre bottom. (Photo by Bruce MacMillan) |
Contributors and Credits:1) Bruce MacMillan <bruce_macmillan(at)telus.net>
2) http://www.army.mod.uk/royalsignalsmuseum/wirelesssetno11.htm
3) http://en.wikipedia.org/wiki/Army_No._11_Wireless_Set
4) http://home.wxs.nl/~meuls003/wireless/wireless.html
Jan 26/11