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160 meter antenna pros and cons
On Mon, 30 Oct 2006 18:08:57 -0800, Roy Lewallen
wrote: If you do that, the outside of the coax becomes the other half of the dipole. Be prepared for some interesting effects in the shack. Joe, Getting detail from you is like drawing teeth. I suppose part of the learning process is learning the factors that are relevant to the situation. You did say you would connect the outer of the coax to the tower.... where abouts? Near ground, somewhere else? This makes a difference. Fundamentally, you are probably on the wrong track connecting a half wave wire to the centre of the coax... but that depends on what you connect to the other side of the end of the coax. If in fact you effectively ground the end of the coax at the outer, and have the centre connected to the end of your half wave wire, you will have a very high VSWR on the coax, exacerbating the loss it already has, and the magnitude of that loss depends on things that you haven't described... but it can be huge. If you were to chose the worst length of a wire to connect to a substantial length of coax inner in that scenario, it is probably a half wave. What were / are you trying to achieve? Owen -- |
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