Towertalk
[Top] [All Lists]

Re: [TowerTalk] antenna choices for K4XS

To: towertalk@contesting.com
Subject: Re: [TowerTalk] antenna choices for K4XS
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Sun, 19 Apr 2015 11:43:11 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 2015-04-19 11:20 AM, Kevin Stover wrote:
> A balanced feed point fed with unbalamced line needs a choke or 1:1
> balun or you get feedline radiation and screwed up pattern from
> common mode current on the coax shield.

Mosley's TA series antennas are not balanced feed points.  They strap
one side of the driven element to the boom - that severely unbalances
the antenna *even if one uses a balun or choke*.  Depending on the
antenna height (impedance of the tower at the antenna DE), it may be
nearly impossible to make a choke work properly and keep the feedline
and/or tower from radiating.

73,

   ... Joe, W4TV


_______________________________________________



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

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