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#1
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"dave" wrote
A BalUn would help a lot. For what? If the antenna system is balanced (as are dipoles, inherently), I seriously doubt a balun would be good for anything. |
#2
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Howard Lester wrote:
"dave" wrote A BalUn would help a lot. For what? If the antenna system is balanced (as are dipoles, inherently), I seriously doubt a balun would be good for anything. He's feeding it with coax, so it's not just a good idea, it's required. The antenna is balanced, the feedline is not. He stated the feedline is RG-8X. tom K0TAR |
#3
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"Tom Ring" wrote
He's feeding it with coax, so it's not just a good idea, it's required. The antenna is balanced, the feedline is not. He stated the feedline is RG-8X. I know that, and just because it's balanced to unbalanced, it's not *required.* The antenna system can work just fine without one. In some cases, at least according to the late Lew McCoy, it can do more harm than good. If the antenna system is inherently unbalanced due to one leg being, say, in greater proximity to metal and other objects, then I would consider using some kind of balun or choke system. |
#4
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Howard Lester wrote:
"Tom Ring" wrote He's feeding it with coax, so it's not just a good idea, it's required. The antenna is balanced, the feedline is not. He stated the feedline is RG-8X. I know that, and just because it's balanced to unbalanced, it's not *required.* The antenna system can work just fine without one. In some cases, at least according to the late Lew McCoy, it can do more harm than good. If the antenna system is inherently unbalanced due to one leg being, say, in greater proximity to metal and other objects, then I would consider using some kind of balun or choke system. http://www.bunkerofdoom.com/lit/bal_...baltransys.pdf |
#5
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Howard Lester wrote:
"Tom Ring" wrote He's feeding it with coax, so it's not just a good idea, it's required. The antenna is balanced, the feedline is not. He stated the feedline is RG-8X. I know that, and just because it's balanced to unbalanced, it's not *required.* The antenna system can work just fine without one. In some cases, at least according to the late Lew McCoy, it can do more harm than good. If the antenna system is inherently unbalanced due to one leg being, say, in greater proximity to metal and other objects, then I would consider using some kind of balun or choke system. Well, I'm not going to argue with someone who thinks that placing a balun between an unbalanced feed and a balanced load could ever possibly do more harm than good. It would be a utter waste of time. tom K0TAR |
#6
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Some of the participants here might find
http://eznec.com/Amateur/Articles/Baluns.pdf interesting. Roy Lewallen, W7EL |
#7
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Roy Lewallen wrote:
Some of the participants here might find http://eznec.com/Amateur/Articles/Baluns.pdf interesting. Roy Lewallen, W7EL Thanks Roy. Read it a while ago, but good to get a refresher. tom K0TAR |
#8
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Tom Ring wrote:
Well, I'm not going to argue with someone who thinks that placing a balun between an unbalanced feed and a balanced load could ever possibly do more harm than good. That's because you are calling it a dipole and assuming it is a balanced antenna. In reality, it's a quarter wave sideways vertical wire antenna, with a single quarter wave radial at the feed point. See, now it all makes sense. :-) Or a quarter wave end fed horizontal antenna with a single tuned feed point radial. Not only that, I wonder if I can patent them, and sell them via a web site for big bucks. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM |
#9
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Geoffrey S. Mendelson wrote:
That's because you are calling it a dipole and assuming it is a balanced antenna. In reality, it's a quarter wave sideways vertical wire antenna, with a single quarter wave radial at the feed point. See, now it all makes sense. :-) Or a quarter wave end fed horizontal antenna with a single tuned feed point radial. Not only that, I wonder if I can patent them, and sell them via a web site for big bucks. Geoff. You need to have a chat with Billy Mays. If he hasn't made it to networks in that part of the world, you're lucky. HI I'M BILLY MAYS FOR THE HYPER-Q ANTENNA!!!! THIS PATENTED DESIGN OUTPERFORMS EVEN A DIPOLE!!!! .... |
#10
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Howard Lester wrote:
"Tom Ring" wrote He's feeding it with coax, so it's not just a good idea, it's required. The antenna is balanced, the feedline is not. He stated the feedline is RG-8X. I know that, and just because it's balanced to unbalanced, it's not *required.* The antenna system can work just fine without one. In some cases, at least according to the late Lew McCoy, it can do more harm than good. If the antenna system is inherently unbalanced due to one leg being, say, in greater proximity to metal and other objects, then I would consider using some kind of balun or choke system. Sorry, I forgot to add PLONK! tom K0TAR |
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