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Hi Chuck,
No you didn't miss the boat but I need to clarify. My intent is to have a permanent long wire antenna installed without having to "break" the rigging with insulators. I know I can haul a wire up with a halyard but I want it permanently available. I think that the most out of the way place to permanently raise a longwire is along the shroud. I'm not very worried about rf burn because I can be careful and/or insulate the shroud at the level that is likely to be touched. I am more concerned about loss of effective power due to reactive interaction with the grounded shroud. Any thoughts? Hello Jerry, I'm not sure I understand exactly what you want to do. It seems you want to simply use the shroud as a support for an insulated wire, which would be your antenna. This would allow you to avoid a direct (DC) connection between the antenna wire and the shroud. I think that if the shroud were non-conducting, your idea would work well. If the shroud is metal, which is most likely, then I believe you will transfer energy to the shroud which in turn will radiate and provide a means of producing RF burns. A better solution might be to slip some rubber or teflon tubing over the shroud up to a height of say six feet. You might slit the tubing to allow attachment without disconnecting the shroud. Then you could attach your short feed length of wire from the tuner directly to the shroud and you're in business. Do the same on the other shroud and it may even look nice. If that is not attractive, you could run a length of nylon or dacron line from someplace on the hull to the mast (or use a flag halyard) and pull an insulated wire antenna up to some pre-determined height that way. You will still get some coupling into the rigging from any antenna anywhere on the boat. Usually (but not always) there is little danger of RF burns. One advantage of this technique is that you can get the antenna to be a quarter wave at some desired frequency--an option not available with the shroud antenna. Have I missed the boat? Hope that helps. Chuck |
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