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Radio Propagation


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D-Region Absorption
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Created by PA4RM

The International Group for Historic Aircraft Recovery (TIGHAR) believes it has the key to unlock the decades-old mystery of what happened to famed aviator Amelia Earhart and her navigator Fred Noonan in their planned circumnavigation of the globe in 1937. TIGHAR’s The Earhart Project analyzed dozens of radio transmissions received by radio amateurs and other short-wave listeners during the fra...

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