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coax length

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powernye1

powernye1

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Aug 29, 2010
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I noticed when looking at antennas at the truck stop recently, that they all recommend an 18' coax. I have been using a 12' one because I don't need 18 feet, the 12' one goes right from the dash to the antenna mount without any extra.Why do the manufacturers recommend an 18' one/ Anybody know? Should I buy an 18' one if all I need is 12'?
 
W

W2NJS

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Complete baloney in the general sense. Eighteen feet may be a length that guarantees the feedline will not be resonant on the CB band but that's about it. If that's Greek to you you still shouldn't worry about it because it really doesn't matter that much. The general rule, if you must have one, is to make the coax run as short as you can between the radio and the antenna.

Regards,
Tom, W2NJS
...licensed since 1952...God, am I really that old?
 
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