David G. Nagel wrote:
What I was taught is that in a properly installed antenna system the
coax will not radiate. If the antenna is not properly matched to the
coax you get current flow along the outside of the coax shield.

Is "matched" the correct word to use there? A 50 ohm balanced dipole
is perfectly "matched" to 50 ohm coax but the feedline will likely
radiate. A 50 ohm balanced dipole is not "matched" to 600 ohm balanced
line but with proper attention to details the feedline will like not
radiate much.
--
73, Cecil http://www.qsl.net/w5dxp


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