John,
You might check with http://www.directivesystems.com/ under the APP Notes
link. Dave,
K1WHS is in the process of building this so it is not available yet but
worth periodically checking his site.
Steve
K1IIG
> John,
>
> I don't think there is an easy answer to that.
>
> What I do is model each antenna in EZNEC and then compare an antenna's
> pattern by itself to various placements amongst the others.
>
> This is laborious at first but now with most of the antennas modeled it is
> getting easier.
>
> GL, 73,
> Chet
>
> -----Original Message-----
> From: vhfcontesting-bounces@contesting.com
> [mailto:vhfcontesting-bounces@contesting.com] On Behalf Of John Kemker
> Sent: Tuesday, May 12, 2009 3:28 PM
> To: vhfcontesting@contesting.com
> Subject: [VHFcontesting] Stacking different Yagis
>
> I'm working on a tower project and it's nearing completion. One of the
> items I'm looking into is putting up four different yagis on four
> different
> bands on the tower:
>
> (From the top of the mast, down)
> M2 432-13WLA on 70cm
> Cushcraft 13B2 on 2m
> Cushcraft A50-5S on 6m
> Mosely CL-33 tribander on HF
>
>
> How much vertical separation do I need between each antenna on the stack
> in
> order to avoid unwanted interaction?
>
> --
> --JohnK
> 73 de W5NNH
> 10X 75371/M&M 117/SMIRK 6185/TRA 2499/Norcross 228 F&AM
>
>
>
>
> ---
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