Agree, my DX Eng 4 sq vertical array (high impedance) is almost always
the winner on 160 vs an 85' T, a toss up with a 2L beam @157' on 80m,
and rarely better than the 3L 40m @ 140'. So I believe the 4sq RDF
numbers are valid. Another plus: when p-static kills the 80m beam the
4sq is the go to Rx antenna.
I was advised that exact radial symmetry is important to get the best
pattern. i.e. the same length, buried, and compass azimuths on the
radials for each vertical. W8JI also advises this also for short loaded
vertical 4sq receive arrays and when I built one it worked.
https://www.w8ji.com/small_vertical_arrays.htm
Grant KZ1W
On 8/6/2018 16:21 PM, Chortek, Robert L. wrote:
Not to hijack the thread, but...
My Hi-Z Array works reasonably well in 160 (despite being only 40’ per side)
and very well on both 80 and 40. It has allowed me to work many countries on 80 and
160 I would not otherwise have been able to hear.
To me, it was worth the effort.
73,
Bob AA6VB
Sent from my iPhone
On Aug 6, 2018, at 4:17 PM, WW3S <ww3s@zoominternet.net> wrote:
I put a 3 ele hi z array up last fall, and it's not worth a tinkers dam....at
least to me.....may be some local noise....it certainly has directivity, at
least on the bcb, so so on 80, but on 160, which was my primary interest, never
worked well, never better than my reversible ewe, which is probably going back
up this fall....
Sent from my iPad
On Aug 6, 2018, at 6:20 PM, Tim Childers K9CQ <k9cq@k9cq.com> wrote:
I have been using the Hi-Z 3 element at 50 foot spacing that Lee designed. I
can tell you that the results for me were amazing and it gives you 6
directions. It works quite well on 40, 80 and 160. You can also find them at
DX Engineering.
Tim, K9CQ
-----Original Message----- From: lee@k7tjr.com
Sent: Monday, August 6, 2018 4:32 PM
To: topband@contesting.com
Subject: Re: Topband: making a bev seem longer
First let me apologize if you get this e-mail twice as I have been having
problems with MSN.com.
Hi JC,
Not all vertical arrays are mono band. A well built 4-square on a 60 foot
per side can do a stellar job on 160, 80, and 40 meters while extending well
down into the broadcast band. The 3 element as well as the 4-square based 8
element on an 85 foot diameter circle will do the same thing.
Lee K7TJR
---
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