Towertalk
[Top] [All Lists]

Re: [TowerTalk] Omnidirectional antenna for domestic contests

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Omnidirectional antenna for domestic contests
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 6 Oct 2015 11:25:44 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hi Herb,

I just modeled a 30M dipole at 50 ft with one leg rotated 45 degrees, 60 degrees, and 90 degrees. Yes, the nulls fill some, but at the expense of broadside gain. And, of course, it's much trickier to rig, requiring four supports and/or guys in the good places. Two fans require four supports, but they can be widely separated.

73, Jim K9YC

On Tue,10/6/2015 5:51 AM, Herbert Schoenbohm wrote:
Can't the end null of dipoles be mitigated by putting up the dipole in a slight 120 degree V configuration. Although I have never seen this modeled for HF, I understand this is how broadcast FM antennas are designed to get an omni directional pattern. The same concept should work at HF as well. Right?

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>