Paul: My tower is a 64-foot tall Tryon self-supporter - shorter than yours. Top loading is provided by a Bencher Skyhawk ten-element triband Yagi where I shorted the parasitic elements to the boom wi
I've done exactly what Herb suggested: hung a sloper for 80M off the side of my 160M shunt-fed tower. Neither antenna knows the other is there and both work pretty well - meaning I'm satisfied with w
Jeff: I've done exactly what Herb suggested: hung a sloper for 80M off the side of my 160M shunt-fed tower. Neither antenna knows the other is there and both work pretty well - meaning I'm satisfied
Jeff, You will have problems with attempting to shunt feed a 100 foot grounded tower on 80 since it approaches a grounded half wave radiator and just to long on 80. The solution for this is to make a
As Tom, Rudy, and Richard have noted, this stuff is potentially important, but awfully difficult to quantify for a variety of reasons. One is that what's happening in the trees is not the only thing
Topband is one of the most frustrating HF band to work DX on that you will encounter. Can it be done from a 1/2 acre city lot, yep, and smaller. I may live in the "high desert" (Quartz Hill/Lancaster
Hello All, First, I want to describe my problem. I have a 1/2 acre lot in the back property where I install my antennas. I live in the central valley of California which is only about 300 feet ASL. I
I dont know what you are using for 80M Steve and why all the feeds, etc are located at the top of the tower. In the 80's I had a 100' Rohn 25 with a stack of yagis and shunt fed on 160 which worked
Sloper is really not the same thing as a parallel vertical wire at four feet as with the original poster. The vertical wire parallel to the tower at four feet has a much higher degree of coupling to
Paul, I really don't know if it makes a difference as the top wire is only supposed to do top loading and the goal is to minimize high angle radiation from the horizontal portion. I saw the crow's fo
Dave, If you ground the top of the wire of a quarter-wave sloper to the tower and feed the bottom of the slant wire instead (assuming a ground rod and some radials laying on the ground at the feed po
Dave, If you ground the top of the wire of a quarter-wave sloper to the tower and feed the bottom of the slant wire instead (assuming a ground rod and some radials laying on the ground at the feed po
Author: Dan Edward Dba East edwards <dan.n.edwards@sbcglobal.net>
Date: Tue, 11 Oct 2011 07:09:00 -0700 (PDT)
rich while it was not a driven array, we tried a parasitic one. we had 3 1/2 wave slopers up at w5wmu...the guy wires on the 200' tower were NOT broken up, though, so, i hung the dipoles 1/2 way bet
Hi Ed, Nice thing to have access to. My thoughts would be for a delta loop ... easy to build, tune, match, but with a tower that tall, I think I would entertain building a bi-square. The wires from t
Hello Topband Fans: I have been given an opportunity to install a simple wire antenna for 160m from a commercial tower here in VE4 land. The tower is 450 feet (aprox 140m) and is guyed at 5 levels I
I have a G-2800SDX. I don't feed the tower, which is a crank-up, though I have used quarter-wave slopers for 80 and 160 with no problems. Jim N7US --Original Message-- I spoke with Yaesu on this ques
reat story. Indeed the huge mega dxpedition churns out Qs that we all like and work for. But even the group that was FT5GA Made a lot of people happy with either a completely new country or some new
You might consider feeding it with a shunt fed cage at about 1/4 down from the top and attach elevated 1/4 wave radials at that point. I had a 308 foot tower and took the easy way out by running up a
I am trying to use a 160m sloper on a TRI-EX 54 foot crank-up tower. I have a L bracket affixed to the top section for the connection utilizing PL-259. The sloper wire is approx 143 feet long using f
I am trying to use a 160m sloper on a TRI-EX 54 foot crank-up tower. I have a L bracket affixed to the top section for the connection utilizing PL-259. The sloper wire is approx 143 feet long