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Hey starman,
I am still trying to digest the material on the website you listed. I even found another website that referrences this one, and has pictures. I am still not clear on the purpose of the 30turn/10turn matching transformer inside the shielded box. What does this accomplish that a 300/75 ohm matching transformer between 300 ohm twinlead and 75 ohnm coax would not? Also I am planning on grounding the shield of the coax to a grounding stake at the "base" of the antenna, as soon as the coax comes near enough to the ground to do this. How can I do better than that, for a ground? I do appreciate your patience. "starman" wrote in message ... Jim Williams wrote: If I run a wire out the window to a tree near the house, do I also need to run a ground wire to the ground outside? Does an outside wire perform better if it's grounded or is it a safety precaution (or both)? It's mainly a safety issue, since you can't make a good RF signal ground for the type of antenna you're considering (random wire or inverted-L), *unless* you use the technique on the following website: http://www.anarc.org/naswa/badx/ante...e_antenna.html An RF signal ground needs to be short. Several feet of ground wire is too much. That's why the grounding method on the website (above) works so well. The ground wire to the rod is very short. Mine is about 12-inches. Even if you're not interested in reducing noise with a good RF ground, it's still a good idea to have some kind of ground for lightning or just static electricity. I suggest you install a ground rod near the location where the antenna wire comes inside the house. Connect a lightning arrestor between the antenna lead wire and the rod. Better yet, build the antenna design on the website above. This method helps to reduce noise from domestic appliances such as televisions and computers. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
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