John,
I am a very much a "function over form" type of guy. I own a few 4-squares
(80, 40, 20, 15 and a 2-el on 160m <broken>). I am still looking for an
ACB-10 to "have the whole set".
Most are over very uneven ground.especially my 80m one.
Check this link. It's a long read. There are 2 separate emails where I
have gain(s) and vague descriptions
of each of the bands array's outlined. None of this may be suitable for you
however as my verticals are all raised with 2 raised radials each.
The 80m one works. I am not as loud as some, but louder than others even
given my long coax run, reduced power (700w) and blocked in some directions.
My ground (rocky, no topsoil, nowhere near saltwater and QTH in some
directions suck but I make lemonade.
http://lists.contesting.com/archives//html/Towertalk/2016-10/msg00213.html
Re: [TowerTalk] Wire 4-squares - they work ! (long) (GAIN?)
GL! Mike VE9Antenna Antenna
- - - - - -- -
A year ago I moved to a beautiful 17 acre property. It is all open with
lots of grass to mow. I would like to put up an 80m 4 square, I have a DX
Engineering phasing unit, controller and four freestanding verticals. The
problem is, the property slopes down from the house and it is also rolling
up and down so It is difficult to find a flat spot on higher areas for the
four verticals. To complicate matters there is a residential power line
running across the middle which seems to be on the higher spots of the
rolling terrain. The DXE manual states the base height should differ less
than 20% of the array diameter and it gives an example of 12 feet. I am
assuming array diameter means distance between verticals. I am sure that I
can get the base heights within 5 feet on a higher area of the property but
even that seems like a lot. What effect does base height have on a vertical
array? I could probably could have less base height differences if I placed
it in a valley with the 6 foot rolling hill next to and above it so the
radials would be going uphill, is that a better option? I am not interested
in elevated radials.
73,
John KK9A
http://www.kk9a.com
Mike - Keswick Ridge, NB, Canada
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|