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Coax Power Derating

November 28th Fact-of-the-Day

Heat from direct summertime solar radiation on a coax cable can substantially lower its maximum power rating, because heat from the sun adds to heat from RF power loss. That problem can be avoided by installing a sun shield to protect a coax transmission line from direct solar radiation. Coax sun shields should be designed to allow unrestricted air circulation entirely around a line, so heat from RF power loss can dissipate freely into the air. ©2004 Martek International All rights reserved.

See Coax Ice and Sun Shield


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