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How wireless beacons guide ships in the fogThe Marconi invention can determine distance of the ship from the beacon to steer the vessel into a Harbour during foggy weather
How wireless waves guide aeroplanes during bad visibilityMethod of directing the pilots of aircraft flying to and from Croydon has been revolutioned by the Marconi directional visual beacon station erected at croydon. WWII
Armstrong Whitworth Whitley VII of 612 Squadron takes off from Iceland. A censor has painted out the wing and fuselage ASV aerials
Boulton Paul Defiant IA at the factory showing the array of radar aerials
Putting up TV aerialIn the beginning of Television, in Sweden. The aerial is mounted by two men in white coats Date: 1950s