[50mhz] 6M EME antenna question

[Lance Collister]

Gary Mitchelson - N3JPU wrote:

>I am looking to upgrade my current 5 over 5 stack (Directive Systems
>DS50-5's, vertically stacked) which is fixed horizontal, to something I can
>add EL control to enhance my 6M EME operations. I suppose I could go with a
>4 bay but not sure if I want all the complexity involved with a H frame. But
>would give me a good way to add EL.
>
>So I was thinking of a long boom single yagi. To at least improve upon my
>current gain I would need something like the M2 9 element, or even better
>would be the 11 element.
>
>Anyone have any suggestions on how to EL control just a single long boom?
>
>Gary Mitchelson
>N3JPU Montgomery Co. MD  FM19
>http://www.mitchelson.org/ 
>
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Hello Gary,

You can see a nice photo on my web page of how KR7O rigged up elevation 
on a borrowed 6M9KHW last year...  And also see how I rigged up 
elevation for my 6M11JKV.  HOWEVER, remember that, from where you live, 
you will want to be able to elevate right up to 70 degrees elevation if 
you want to match the moonset of horizon-only stations in EU.  With a 
single yagi, it is very hard to elevate more than about 45 degrees.

The solution, which is really quite simple mechanically and much 
stronger, is to put up 4 small yagis on a simple H frame.  Note that 4 
of the little 6M5X yagis give you a couple dB more than a 6M11JKV.  So 
even a small 4 bay array of computer optimized 4 element yagis (see the 
design OZ1BNN is using) can be quite effective with JT65A mode. 

GL and VY 73, Lance

-- 
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
P.O. Box 73
Frenchtown, MT  59834  USA
QTH: DN27UB
TEL: (406) 626-5728
URL: http://www.bigskyspaces.com/w7gj