I am trying to decide what to use to build 4 new 80m verticals for a 4-square upgrade here. My criteria are: 1. full size 1/4 wave verticals, no top or base loading. 2. must be able to standup to new
I believe that Array Solutions also has full sized 80m verticals. --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf Of Mirko S57AD Sent:
Yes, I meant Array Solution freestanding verticals, but screwed up my memory :-( 73 Mirko,S57AD Mike Fatchett pravi: _______________________________________________ __________________________________
My first thought is 3 sections of 20G tower guyed at the top and setting on UHMW pads. Then 3 sections of 10 foot long schedule 40 aluminum pipe in decreasing diameters... You will need to shim them
4 homebrew HyGain Hytowers made from 3 sections of Rohn 25 and some oil filled Nylon insulators and a 30' stinger. I can supply details if needed. No guys required. If you don't want to build them, b
Hello Dave! You might look at the photos on my web site http://www.k3lr.com under the tab of 80 meter vertical project (two phased 4 squares). I am using the HyGain Hytower as the building block for
Dave, I've seen the Array Solutions verticals at NT1Y. The aluminum tube elements are very heavy duty. I don't recall the diameter at the base, but they must be on the order of 4"-6". In any case, th
I'd suggest 38' or 48' of the tower with a shorter "whip." It still works with a single set of guys at 30 or 35' - the whip will be stronger (two 12' sections of tubing, double or triple walled if ne
Hi David, The way I do my 4 sq for 80 mtrs is I have a 132 ft vertical made out of 100 ft of rohn 25 and 32 ft of Alum mast and some smaller alum tubing. I have 3 guy levels with Philly an the tower
A couple things to think about, and a few questions.. What are you going to use as a feed network? A Comtek box, A Lewallen current forcing, Full on Gehrke networks? Are you operating over the entire
I don't know that Array Solutions still carries the 80m vertical. ZeroFive Antennas http://www.zerofive-antennas.com sells one that looks very similar to the Array Solutions freestanding vertical for
Author: "Trent and Lorraine" <vk4ti@sampson.net.au>
Date: Sun, 17 Dec 2006 14:54:12 +1000
Greetings all, Could anyone enlighten me ? : Is there any practical reason that free standing towers utilised in a gamma match configuration are not used for 4 squares ? Locally there are heaps of ol
Nope. Especially for a narrow band application. Probably just tradition and simplicity. In the pro world, matching networks on each element are pretty common (if not standard). ______________________
In an array, the effect of narrow band elements (skinny) is probably less than the fact that the spacing and phasing will be wrong with significant frequency shifts. (at least for F/B.. forward gain
Trent, Elegant simplicity is the reason insulated base verticals are the "defacto standard" for 4-square arrays. Each element is identical and most importantly there are no reactive elements between
Consider using a linear loading arrangement at the bottom of each vertical. This is what I did on my 4 square that I had in CA and it worked really well. All 4 of my antennas were made from 3" irriga
s I know that at my QTH, about once a year, we get bad enough winds to buckle 30 ft of unguyed 3" irrigation tubing. YMMV. Rick N6RK _______________________________________________ __________________
With all due respects, that is B.S. When I finally took my 63 ft verticals down, I untied the last remaining guys, the ones that were at the 35' level and jumped back thinking they would come crashin
Maybe we're talking two different things here. I had 60 ft of 3" tubing up with guys at the top and middle. The top guys failed in a wind storm and the top half folded over. Same thing happened sever