Corona and precipitation interference in v.h.f. television reception

An investigation has been made into a type of interference occurring during thundery weather which may mar reception on v.h.f. In particular, it causes a degradation of the quality of pictures received in Britain for rebroadcasting purposes. Both laboratory and field experiments are described, from which the mechanisms giving rise to corona interference and precipitation interference are deduced. Protective measures are described which suppress the interference on horizontally or vertically polarised aerials by about 30dB.

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