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#1
October 5th 05, 09:00 PM
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The G5RV has been said to radiate from the feedline.
"RB" wrote in message ... Dumb sounding question----but-----with a ladderline fed dipole, is the feedline supposed to radiate and be part of the antenna, under some conditions? |
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#2
October 6th 05, 02:53 AM
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On Wed, 5 Oct 2005 16:00:47 -0400, "Fred W4JLE"
wrote: The G5RV has been said to radiate from the feedline. Only if it is unbalanced (such as not installed sysmetrically). Danny, K6MHE email: k6mheatarrldotnet http://users.adelphia.net/~k6mhe/ |
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#3
October 6th 05, 04:00 AM
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The G5RV has been said to radiate from the feedline.
Only if it is unbalanced (such as not installed sysmetrically). Danny, K6MHE If each side of the dipole is bent asymmetrically, then very little imbalance in feeder currents is evident. Off center feeding a dipole does unbalance feedline current. A double extended zepp is a good example of an unbalanced feedline with significantly different currents in each leg. It would be interesting to see just how much power is actually radiated from the feedline of such an antenna. Frank |
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#4
October 6th 05, 04:16 AM
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Frank wrote:
A double extended zepp is a good example of an unbalanced feedline with significantly different currents in each leg. Not true. The "double" means it is a balanced dipole. An EDZ is simply a 1.25 WL center fed dipole. The currents are supposed to be balanced. -- 73, Cecil http://www.qsl.net/w5dxp |
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#5
October 6th 05, 04:24 AM
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"Cecil Moore" wrote in message
news  Frank wrote: A double extended zepp is a good example of an unbalanced feedline with significantly different currents in each leg. Not true. The "double" means it is a balanced dipole. An EDZ is simply a 1.25 WL center fed dipole. The currents are supposed to be balanced. -- 73, Cecil http://www.qsl.net/w5dxp Ok, so I used the wrong name. What I meant was an antenna fed at the end with open wire line, with one side of the feedline unconnected. Is it called a zepp? Frank |
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#6
October 6th 05, 04:31 AM
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Frank wrote:
Ok, so I used the wrong name. What I meant was an antenna fed at the end with open wire line, with one side of the feedline unconnected. Is it called a zepp? Yep, Zepps and Extended Zepps are unbalanced antennas. When you add the word "double" to a Zepp or Extended Zepp, it becomes a balanced dipole. Zepp is an end-fed 1/2WL, Extended Zepp is an end-fed 5/8 WL. Double Zepp is a center-fed 1WL. EDZ is a center fed 1.25WL. -- 73, Cecil http://www.qsl.net/w5dxp |
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