[50mhz] 5 over 5 stacking recommendations

[Dave Edwards]

At one time I had 4 element Hy Gains stacked. They are similar size to the 5 
element cushcraft because they are full spaced elements. At that time the 
rule of thumb when stacking was to seperate them by the boom length (12 
feet)
It worked for me for many years!! The phasing harness has to be exact also. 
As I remember,  I had two types of coax in the harness.
...Dave
----- Original Message ----- 
From: "WD0T" <wd0t at mncomm.com>
To: <50mhz at mailman.qth.net>
Sent: Saturday, May 05, 2007 9:44 PM
Subject: [50mhz] 5 over 5 stacking recommendations


Greetings all, first time posting here!

I have a question on recommended stack spacing, for using 2 cushcraft 5 
element 6m yagis, looking to put 2 up on a short crank up tower for the June 
VHF contest.  By short tower I mean a 30ft to the lower 6m antenna. I am 
talking about stacking one above the other.

What would you recommend for stack spacing using 2 of the CC 5 element, 
stock standard yagis?  Max gain would be nice, but also I need to not get 
crazy in terms of spacing distance.  I have seen in some places 
recommendations for .6 wavelength spacing for lower sidelobes, however I 
have also read that each type of antenna and height needs to be modeled to 
arrive at optimum spacing.

Any help, thoughts certainly appreciated.  Thanks so much.

73 God Bless! Todd WD0T
DN94, Pierre SD.
Moderator: Ray Brown, KB0STN
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