If you can get hold of it, there was a series of articles in NCJ a few
years ago by K3NA that did some sophisticated modeling of inter-tower
interactions. I don't recall if he came up with some generalizations
that might be helpful to you.
73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
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reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000
On 8/17/2011 5:35 PM, Larry wrote:
> I have 100ft (30m) tower that will have a 3 el 40M yagi and 80M rotatable
> dipole on it. I am going to put up another tower (probably 70 feet, maybe 80
> feet) for a log periodic array for 30-10M and probably a 6M yagi above log. I
> am also thinking of trying to feed the 100 foot tower for 160M. I do not
> recall seeing any discussions on spacing of towers. As far apart as possible
> is probably the best advice of course. These are guyed towers so the guys
> will dictate some amount of spacing. Any pointers to discussions about tower
> spacing? Facts? Opinions (humble or otherwise)?
>
> I had thought about maybe trying to space them and feed them as array but I
> don't think I have enough room for a 2 el 160 array with an appropriate
> ground field. The towers will probably be in exactly a North-South
> configuration which is not optimum for most places from here (Europe is about
> 45 degrees, Asia closer at about 345 degrees, VK/ZL at 240 degrees, Africa
> at 90-110 degrees, and South America/Carribean about 150-200 degrees). I have
> not tried modeling two different top-loaded towers yet (looks hard at the
> moment). I need to spend some time with ON4UN's book but any thoughts on the
> array scheme would be welcome.
>
> 73, Larry W6NWS
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