When I moved the feed for my inverted "L" antenna from my shack to a post set 100 feet from the shack, the noise level on receive improved by about 3 S units. I use an SGC tuner on the post and run the coax and power cable in an underground conduit to the shack. The radials are hard to install as the ground cover is heavy brush and I try to snake the #14 wire more or less through it. I only have 5 so far, about 30 feet long. The ground is very wet in the winter. I seem to get good results, probably because the antenna wire is 176 feet long and 55 feet high. A shorter wire would be more intolerant of my poor ground. I also have a 43 foot vertical mounted on the post, made of aluminum tubing. The inverted "L" usually, but not always, works better on 160 through 30 meters. On 20 meters, the vertical is almost always an S unit better than the "L". On that band the height is about 5/8 wave long and the higher feed resistance helps with the ground situation. The two antennas are relay selected by a switch in the shack so I don't need to walk out with a flashlight and change jumpers anymore!
73, Rick Dettinger K7MW > I can't speak to the losses in the LMR-400 cable under very high > SWR, but > for the record my Inverted L brings the single wire into the tuner > in the > shack. I use a 1/4" acrylic tubing as an insulator to bring it > through the > outer wall into the shack. > > Good luck and have fun Lew! > > 73, > > Ron AC7AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
