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On Mon, 26 Sep 2005 00:29:55 GMT, Rockinghorse Winner
wrote: Ham op writes: My installation is as follows: 1) 600 ohm open wire line [tuned of course!] from the antenna to a protected [from WX] area under the sun porch. There I simply connected 450 ohm ladder line to the 600 ohm line for the run into the house. [450 ohm line has increased losses in bad WX]. As mentioned in another response, I run the 450 ohm line at right angles over metal structures. I keep the line a least 6 inches from pipes, heating vents etc and twist the line one twist every three [+/-] feet. I run 1 KW 80 through 20 meters with NO interference or RFI in the shack. This computer is located 3 feet from the amplifier and has no adverse effects from the amplifier. BTW, my station is grounded [earthed] IAW electrical code. Are there any lengths for the xmission line one should avoid when feeding different types of wire antenna? Some lengths work better than others, depending on band. See the web site, http://www.qsl.net/w5dxp and look at the "tunerless" all band antenna fed w/ladderline. bob k5qwg |
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