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Sporadic E propagation

Sporadic E propagation is a rare form of propogation where a radio wave bounces off a sporadic E cloud in the E layer of the ionosphere. Distances of 750-1500 miles are common. It affects TV channels 2-6 and all FM channels, starting at Channel 2, and working its way up to the FM band after Channel 6. Sometimes, it may hit Channel 7 very rarely.

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