[TowerTalk] terrain for a 4SQ system

[Mpridesti]

Jorge

I had an 80 m 4 SQ on the side of hill. I did as VE9AA did. Elevated feed points level with each other. The feed points on the low side of the hill were 15 ft high where the feed points at the higher side of the hill were 5 to 7 ft high. 

I started with 8 radials on each and worked fair. Then I added another 8 radials later and it really began to work!  The pattern got noticeably better by probably 10 dB. 

Front to back and front to side performance became much more pronounced. 

Regards,

Mark, K1RX


> On May 16, 2019, at 5:49 PM, Mike Smith VE9AA <ve9aa at nbnet.nb.ca> wrote:
> 
> Jorge:
> 
> 
> 
> I have several 4-squares in the woods and most of them are on very sloping
> ground.
> 
> I posted my results here a couple years ago.  A quick search will find my
> results.
> 
> 
> 
> Instead of following the slope of the ground, which is quite steep, I tried
> to keep all the verticals
> 
> (all with raised radials) of the array in a plane as close to (as much as
> possible) horizontal with the average
> 
> flatness of Mother Earth.
> 
> 
> 
> Phrased another way, on my sloped ground in the woods, the verticals closest
> to my flat wide open field have their bases a couple feet above the ground,
> but "down in" the woods where the land slopes steeply down, the bases of the
> verticals are up 7 or 8 feet above the ground.  They are "nearly" in a
> horizontal plane with Mother Earth, but not quite.
> 
> 
> 
> They are pretty much all wire verticals, hung from trees with 2 raised
> radials each.
> 
> 
> 
> With my rudimentary measurements I don't notice any huge discrepancy's in
> any of the arrays, in any of 4-directions, except on 80m to the NW, where I
> have metal and buildings in the way. I use the Comtek matching.
> 
> 
> 
> A convoluted answer, I know, hi hi
> 
> 
> 
> A shorter answer might be "I don't think it'll matter and even if it did, I
> doubt you could measure it"
> 
> ( I certainly would NOT level the ground, but that's just me)
> 
> 
> 
> GL !
> 
> 
> 
> Mike VE9AA
> 
> 
> 
> 
> 
> hello
> 
> 
> 
> I want to build a 4SQ system, with four aluminium vertical antennas
> 
> 
> 
> My terrain is not flat, so I will do some work to level the ground
> 
> 
> 
> My question: is just enough to level the terrain where the 4 antennas will
> 
> be placed or is also necessary to level all the field included the field
> 
> occupied by the radials?
> 
> 
> 
> Would be very good to level ALL the terrain that will be occupied by the
> 
> radials and antennas, but if it's enough to level just the place of the
> 
> antennas, will save a lot of money
> 
> 
> 
> thanks!
> 
> Jorge
> 
> CX6VM/CW6W
> 
> 
> 
> Mike, Coreen & Corey
> 
> Keswick Ridge, NB
> 
> 
> 
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