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A general outage formula relating a number of important system outage factors has been derived for long-haul radio relay systems utilizing in-band or crossband automatic channel switching. This formula is used to estimate the outage of TD and TH systems with various switching strategies. The results indicate that the crossband 2 × 18 protection-to-working channel switching system appears to be a very attractive arrangement from the standpoints of good system reliability and efficient use of the radio frequency spectrum.
W. Y.-S. Chen (Thu,) studied this question.
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