Whoa.... I would need a much bigger yard for those ! A local ham did that for me when I was researching vertical antennas.... but I think I will re-visit the issue with him and discover what might ha
Do you claim your vertical dipole works better than a quarter wave with four good, properly tuned/cut elevated radials? Reason I ask is that my aluminum rotatable dipole project has technical problem
I had both a 32 ft vertical dipole and the same vertical dipole converted over to a 40 meter 1/4 wave ground plane with 4 elevated radials. In my case the performance very close to the same on 40 met
Years ago I had a vertical dipole for 40 meters and a raised vertical with 3 radials 10 feet above the ground. The raised vertical was about 6 DB better than the vertical dipole for European stations
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 05 Jan 2011 21:28:15 -0600
I have a long answer prepared, but I want to sleep on it and proof it a dozen more times before I send it. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@c
How high above ground was the dipole? How long was the dipole? A half wavelength? DE N6KB _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.conte
Ken's question is important. What I have seen (but not measured) is that if I raise the bottom of the vertical dipole about 4 ft. off the ground, it seems to work better than when the bottom is sitti
James, I don't know who Mr. Gordo is, but those comments directly contradict the ARRL Antenna Book and the evidence from EZNEC. I've posted the EZNEC elevation patterns here: http://www.karinya.net/g
Gordon West, WB6NOA, one of the most prolific producers of ham radio study material in the US. http://www.gordonwestradioschool.com/ I doubt that there is a ham licensed since the 1970's in the US th
That sounds like my XYL - she's also right even when she's wrong! 73, Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com
I guess "Gordo" never read any of the Antenna Engineering textbooks! The Handbook of Antenna Design Vol 2, Alan Rudge: "The radial ground system and the ground surrounding it, within a radial distanc
ARRL Extra Class License Manual, Page 9-8 Effects of Ground and Ground Systems: "There is little you can do to improve the far-field, low-angle radiation pattern of a vertically polarized antenna if
<http://www.ncvec.org/page.php?id=351> Here is the actual question pool. You are welcome, if you wish, to read through it and see which questions pertain to the subject, and if they do, does the quot
The most directly relevant question is E9C15: What strongly affects the shape of the far-field, low-angle elevation pattern of a vertically polarized antenna? A. The conductivity and dielectric const
The vertical dipole was about 5 feet above the ground at the bottom. The vertical dipole was 66 feet long. All vertical antennas require some kind of ground plane to be efficient, even vertical dipol
She must be related to my XYL, Steve! That sounds like my XYL - she's also right even when she's wrong! 73, Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@cont
Now how can both of you be married to my ex? She must be related to my XYL, Steve! That sounds like my XYL - she's also right even when she's wrong! 73, Steve G3TXQ __________________________________
Carl, although you statement is perfectly correct, it can mislead one to believe that the vertical dipole depends "as much" on the ground as the quarter wave vertical does, and that is way way wrong.
That's true. But the best solution is to use raised radials a few feet above the ground (I used 10 feet). Just 3 raised radials has been show to make the antenna as efficient as 10 to 30 ground radia
Excellent exegesis from all contributors. Go figure... there is nothing sacred... you just never know who you can trust any more ! A good ham friend of mine just bristled when I once said something n