Why This 'Invisible' British Device Made Every U-Boat Radio A DeathSentence

Описание: Every time a submarine commander touched his Morse key, a bright line appeared on a glowing screen aboard a British warship. Bearing fixed. Escort dispatched. Submarine forced under or destroyed.

In 1943, wolfpacks were sinking 700,000 tons of Allied shipping per month. They coordinated by radio, compressing transmissions to 20 seconds — believing no direction-finding system could work that fast. They were wrong.

A Scottish physicist's 1926 lightning research, refined by a Polish exile's engineering brilliance, created a device that could fix a bearing instantaneously. No rotating antennas. No searching. The moment a submarine transmitted, British escorts knew exactly where to look.

The Germans never discovered shipborne Huff-Duff existed. They blamed radar. They investigated the wrong technology. They never stopped transmitting. And their submarines never stopped being found.

When Allied codebreaking went dark for 10 months in 1942, Huff-Duff kept working. It needed no decryption — just the act of transmission itself.

This is the story of the invisible British weapon that turned every submarine radio into a beacon of destruction.


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