Thanks - my note to all - the message somehow jammed up - but thats what I asked - thanks
Tony VK2IC On Mon, Jun 29, 2026 at 9:47 AM W7TMT via Topband <[email protected]> wrote: > The articles were titled "Actual Measured Performance of > Short, Loaded Antennas - Part 1 and Part 2" > by Barry A. Boothe, W9UCW > > QEX Jan/Feb 2014 and QEX Mar/Apr 2014. > > 73 > Patrick, W7TMT > > > > On Sunday, June 28th, 2026 at 16:23, Tony Magon via Topband < > [email protected]> wrote: > > > Hi Jim > > > > Can you let us know if you can remember what editions of > > > > On Mon, Jun 29, 2026 at 6:24 AM Jim Brown via Topband < > > [email protected]> wrote: > > > > > On 6/27/2026 1:41 PM, Dan Bookwalter via Topband wrote: > > > > ok , this isn't a topband question , but , you guys will have better > > > advice than anywhere else.. > > > > so , I am in a very compromised situation , I live in a double , we > have > > > an elevated wood deck, combined both sides of the deck is 45x22. what > i am > > > thinking is a Hustler 6BTV out at the edge of the deck , the base will > be > > > about 15' above ground. > > > > > > Hi Dan, > > > > > > About 15 years ago, I gave a talk on Getting On 160M From a Small Lot. > > > It's mostly about counterpoise systems. None of it is my original work, > > > all is great stuff from others. It includes MANY approaches for very > > > limited real estate. > > > > > > A connection to earth does NOT make a transmitting antenna work better, > > > but it's quite necessary for lightning protection. So is every part of > > > the ground system for our home and station. I've also done talks on > that. > > > > > > There are slides (as a pdf) for both on my website. > k9yc.com/publish.htm > > > > > > A VERY important point about short antennas -- base-loading, in the > form > > > of a loading coil is the absolute worst way to do it. FAR better is top > > > loading. Something like a vertical pole, fed from the base, with wires > > > running horizontally from the top. The diameter of those wires doesn't > > > matter much. Like radials, more is better. The problem with base > loading > > > coils is that current is maximum there, near zero at the far end. > > > Current through a wire is what makes EM radiation, but current in a > coil > > > does NOT radiate, but current distribution is determined by the open > end > > > of the antenna. So current has fallen off a lot by the time it gets to > > > the top of the loading coil. > > > > > > There was a GREAT two-part piece in QEX about this that included the > > > theoretical development, extensive experimental work building antennas > > > with loading at various points of short antennas, and careful > > > measurement of the resulting field strength. One of the things it > showed > > > is that NEC does NOT properly model what actually happens. > > > > > > 73, Jim K9YC > > > > > > > > > > > > > > > > > > > > > > > > _________________ > > > Searchable Archives: http://www.contesting.com/_topband - Topband > > > Reflector > > > > > _________________ > > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > > > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
