OK, here is what I believe I have learned so far:
I can put the lower KT34XA at 40 feet and use a TIC Ring-Rotor N3RR
http://www.erols.com/n3rr/n3ringrotor/index.htm.
I can put the top KT34XA at 70 feet.
(This may be accomplished with a 20 foot chromolloy mast on top of 60
feet of Rohn 25 -- still allowing for a 12 & 17m beam at
80 feet -- both turned with a Tailtwister T2X rotor.)
I will need a phasing system from Hygain http://www.hy-gain.com/ or ARRAY
SOLUTIONS WX0B http://www.arraysolutions.com
I am told by one Ham-engineer that stacked KT34XA's should provide a true
3db gain (power doubling), but another has questioned that.
Comments? Corrections?
Now I just have to figure out where the cash for the extra tower sections
and the nearly $1000. ring-rotor will come from!
Oh, and where does one get a chromolloy mast, why use that, and how much
does one cost?
Thanks! & 73, DavidC AA1FA
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