[Antennas] multiband dipoles, leg seperation

Sun Sep 24 15:43:40 EDT 2006

Hi Sam,
 I don't know how to answer your question.
 The one thing I can say is that I have been keeping my eyes open for a 
couple of 75 meter ham sticks so I could make a dipole similar to one of 
yours.
 God bless,
 Mark WZ0K
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----- Original Message ----- 
From: "Sam Morgan" <ka5oai at cox.net>
To: "antennas - qth.net" <antennas at mailman.qth.net>
Sent: Sunday, September 24, 2006 12:01 PM
Subject: [Antennas] multiband dipoles, leg seperation
> Hello to the group,
> I have used full length multiband/legged inverted vee's in the past with 
> much success. But in this instance I want horizontal radiation, (not the 
> 120 degrees or less apex angle to get vertical radiation) and 
> multiband/legs.
>> Now I have a slightly different problem. I want to use 3 sets of hamsticks 
> in a dipole configuration. I will be using one piece of aluminum as the 
> center for all the antennas. The bands covered will be 40m, 30m, and 17m. 
> I plan to place one set in the horizontal position, lets say the 30m 
> sticks. My question is what angle of separation from each other should the 
> other 2 have from the 30m sticks? 40m sticks pointing upward at an angle 
> and the 17m pointing downward at an angle.
>> I'm afraid I'm not stating the question well. if the horizontal sticks 
> have a 180 degree apex angle. The other two upper pointing hamsticks 
> should be have 120 degrees between them. And the lower pointing set of 
> hamsticks have the same 120 degrees between them.
>> Would that give me enough separation so as to keep the interaction during 
> tuning to a minimum and also allow for horizontal polarization?
>> Could I narrow the separation between the sticks from 30 degrees, to less, 
> like say 20 degrees between the sticks and still not have to much 
> interaction, causing the whole thing to not work well at all? I figure 
> that would make for a better chance to maintain the desired horizontal 
> polarization?
>> Hope the question isn't to confusing and thanks for all input.
> -- 
> GB & 73's
> KA5OAI
> Sam Morgan
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