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#1
November 6th 08, 02:54 PM
posted to rec.radio.cb
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This Place is a Sewer
On Oct 28, 10:04*am, Jay in the Mojave wrote:
Hello Jim: Yeah 18 feet seems top work well in a mobile installation. Why is that? Is it because the antenna puts RF Energy on the coax outer shield due to a lack of ground surface. In all my antennas installs it seems that way. So 18 feet of coax is roughly 3/4 of a wavelength, ( with a velocity factory of .66) and any RF Energy coming back will have to come back thru another 3/4 wavelength of coax. Maybe that length vs wavelength is the best to use. Your comments.... Jay in the Mojave jim wrote: * Feed length 'does' make a difference when calculating swr  - Hide quoted text -- Show quoted text - idiot |
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