[TowerTalk] 15 meter beam on 40 meter tower ?

[Peter Voelpel]

My 40m yagi is 5m above the 15m yagi and influences the front to back on
15m, but by far less then the second 15m yagi 14m below it.

73
Peter, DJ7WW

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
john at kk9a.com
Sent: Donnerstag, 1. September 2022 17:07
To: towertalk at contesting.com
Subject: Re: [TowerTalk] 15 meter beam on 40 meter tower ?

Why would the 40m beam be effected by the 15m? It is unlikely that the 15m
beam will have much interaction from the 40m beam that is almost a
wavelength away but it is easy to model. If you have just one 40m Yagi, most
people put it near the top of the tower for lower radiation angle.

John KK9A 

Everett Jackson wz8p wrote:

Good Morning,
If I put a 5 element 15 meter beam 40 feet above
a full size 40 meter 3 element beam will they work ?

What would be the result ?   I have heard that both beams will suffer.
Best to ask before doing the wrong thing.   Do they need there own towers ?
73,
Everett - WZ8P

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