[Antennas] YAGI Height Recommendation Needed

[Aidehua@aol.com]

Scenario:

I will be putting up three antennas on a 70' tower:

Hygain TH-11 (12 SQ FT)
M2 3 element Linear-Loaded 40m Yagi (9.5 SQ FT)
M2 5 element 6m Yagi (2.0 SQ FT)

I will be using a 20' chromally mast, with 5' going into the tower.  That 
leaves me 15' to use.  Hence, the top of the mast will be 85'.

Been reading alot about ideal take-off angles and have concluded that I'd 
better put my 40m yagi on top (85'), with the 6m Yagi 7.5' (77.5') below it, 
and the TH-11 right at the top of the tower(70').  Is this what you would do?

Esthetically, I'd rather do it in reverse, to resemble more of a Christmas 
tree pattern (TH-11 on top), but feel that the added height on 40m might make 
a difference and the lesser height on 10/15 more ideal...

Your thoughts are welcome!!

73,
Ed NI6S


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