15 Facts About Chain Home

Chain Home was the first early warning radar network in the world, and the first military radar system to reach operational status.

Chain Home proved decisive during the Battle of Britain in 1940.

Chain Home network was continually expanded, with over 40 stations operational by the war's end.

In spite of being outdated, the Chain Home radars were pressed into service in the new ROTOR system until replaced by newer systems in the 1950s.

Chain Home's attempts spurred on many other inventors to contact the British military with claims of having perfected some form of the fabled electric or radio "death ray".

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Chain Home wrote to Watt "on the practicability of proposals of the type colloquially called 'death ray'".

Chain Home made a number of back-of-the-envelope calculations demonstrating the amount of energy needed would be impossible given the state of the art in electronics.

Chain Home had used the RRS' RDF systems at Appleton's request and was known to the RRS staff.

Chain Home agreed, but only if they would sing the Scottish one in return.

Chain Home had been placed on the Committee by the personal insistence of his long-time friend, Churchill, and proved completely unimpressed with the team's work.

Chain Home had originally developed this system as a way to measure the vertical angle of transatlantic broadcasts while working at the RRS.

Chain Home identified the problem not as a technological one, but in the reporting.

The Chain continued to be expanded throughout the war, and by 1940 it stretched from Orkney in the north to Weymouth in the south.

Chain Home was the primary radar system for the UK for only a short time.

Main limitation in use was that Chain Home was a fixed system, non-rotational, which meant it could not see beyond its sixty-degree transmission arc or behind it once the targets had flown overhead, and so raid plotting over land was down to ground observers, principally the Observer Corps.