Author: Andreas Hofmann <Andreas.Hofmann@microsoft.com>
Date: Tue, 13 Nov 2007 08:56:49 -0800
Hi, I am new to the topband, just moved to a new place with 120+ feet fir trees. I would like to experiment with vertical radiators (single, multiple, phased, etc.). I am looking for resources to lea
I also have many tall trees (redwoods, Douglas Fir), and some smaller ones (birch, madrone, pin oak. My 160 vertical is 70 ft tall and top-loaded, suspended between two tall trees, at least 20 ft fro
At my OZ8RO QTH in Copenhagen suburbia I used an inverted L in a tall tree. Vertical part abt 25 meters and the rest sloping. Some 25 radials of mixed lengths. Managed some 160 countries before re-lo
If anyone is concerned about any losses from the tree itself, (IMHO depending on type of tree and time of the year) why not hang a 3 or 4 wire cage around the tree and feed it. In fact if the trunk
On 14th November, Herb wrote... "... If anyone is concerned about any losses from the tree itself, (IMHO depending on type of tree and time of the year) why not hang a 3 or 4 wire cage around the tre
I haven't become involved before, but will now. My T vertical is suspended about 5 feet from an 86 foot tall creosoted wood pole which has a #6 copper ground wire stapled onto its opposite side and g
It's a matter of learning how to best take advantage of Ma Nature. She defines the rules. we need to study and understand them. EXACTLY! 73, Jim K9YC _______________________________________________ T
On 14th November, Ken wrote... "...Currents induced in a low resistance conductor can then re-radiate the RF with little loss, and a change in the net radiation pattern..." ** Sorry guys, but I'm afr
Excellent work. The next step, of course, is to rig one antenna in the clear and one next to a tree, and do A/B comparisons on the air. I have the space and the trees. Perhaps one day I'll do it. :)
the It is my understanding that it would seem to depend on the amount of top loading induced in the horizontal length of the L. The best compromise, if you are stringing an inverted L from trees of
I don't know about the Titanex vertical but I have been using a 1/4 wave Inverted L for 160 for years now and it runs up through a hardwood tree [ Manitoba Maple I believe ] and is fed against 140 1
I read with interest your comment about running a line between the tops of 2 tall tress. I would like to do the same but I am not sure how to mount the support so that the swaying of the trees does n
-- I use weights from weight-belts divers use. Two or three of them provide good tension to my dipole. The weights are out in nature for more than 10 years now, the rope had to be replaced once. Mart
Author: Andreas Hofmann <Andreas.Hofmann@microsoft.com>
Date: Thu, 15 Nov 2007 11:49:54 -0800
Thanks for all the responses I have received. Great group of knowledgeable people. Yes I do have the books most of you suggested... A couple of follow up questions: 1. The wire should be insulated si
people. Yes I do have the books most of you suggested... Yes. If it's close enough to touch at the ends, it will arc with high power (I have the charred pieces of wire to prove it). If it's close nea
When you say "cage" I think you're talking about bonds between the vertical conductors along their length. Only tall palm trees and the like are built to make it that easy. :) Most trees that can sup