[50mhz] Stack spacing question

[Carl]

What sort of conventional wisdom? Electrical or mechanical?

I currently have a 3 el 20M on a 21' boom, next up is a 28' boom on 432 and 
and at the top is 35' of 8el for 6M.
Spacing bottom up is 4' and 5' and the 432/50MHz appear to work exactly as 
when tested alone. Another 432 will be added  soon.

Carl
KM1H



----- Original Message ----- 
From: "Mark Drieci" <guitar0145 at gmail.com>
To: <50mhz at mailman.qth.net>
Sent: Saturday, August 20, 2011 4:43 AM
Subject: [50mhz] Stack spacing question


>I am erecting a new VHF tower with a modified Cushcraft A505 (18 foot boom)
> and a Cushcraft 17B2 (31 foot boom) in a vertical stack.
>
> Conventional wisdom suggests that the 6M antenna be placed atop the 2M
> antenna as it has the shorter boom.
>
>
>
> I have read the section of the ARRL Antenna book where it describes 
> stacking
> scenarios of the 2M over 6M beams, but there are none described that are
> similar to my own.
>
> I am seeking input from the list members on the optimal stacking distance
> between the two yagis to minimize interaction
>
>
>
> Any comments on this subject are greatly appreciated.
>
>
>
> Thank you in advance.
>
>
>
> Mark - KA4MAY
>
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