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#1
September 14th 06, 11:05 PM
posted to rec.radio.amateur.antenna
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Odd Question
Thanks Roy. I must have missed it.
Roy Lewallen wrote: I've answered that question several times on this newsgroup, most recently on Aug. 17, less than a month ago, in the thread "Caged Di-Pole". You can find it at groups.google.com. Roy Lewallen, W7EL Dave wrote: I received this from another group and have not seen an answer. Anyone care to comment? "Good Morning DX List: Here is the technical question of the day. I have a 70 foot tower, shunt fed at 31 feet with two parallel lines of #6 plastic coated copper wire. The lines are approximately 15 inches apart. These lines tie back into the tower at the high end with pieces of aluminum tubing around .75 in. in diameter, and are tied together at the bottom which is the feed point. The wires are each approximately 6" from the tower legs. The question: Can these lines be considered as one piece of wire, and if so, what is the combined diameter of the wire? Think back to the days when "cages" were built to increase the effective diameter of antenna wires. 73, Mike, W5UC |
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