On 10/22/2013 10:54 PM, john@kk9a.com wrote:
I do not recall this article, I thought that he used phased dipoles after
his beam kept breaking. So is this similar to a fan dipole except the legs
are equal length and the bandwidth comes from the 10' spacing at the ends?
Thought I'd add:
I use a center fed, fan dipole with 4' spreaders at the ends and equal
length wires. It gives a useable bandwidth of about 100 KHz IIRC. I've
been planning on adding a third wire using 6' spreaders and changing the
wire lengths by about a foot each. For example 33, 34, and 35 feet.
Those aren't the specific lengths I'll use.
http://www.rogerhalstead.com/ham_files/AntennaFeed1.htm Feed
http://www.rogerhalstead.com/ham_files/AntennaSpreader1.htm current
spreader on the high end
73
Roger (K8RI)
John KK9A / P40A
To:"towertalk@contesting.com" <towertalk@contesting.com>
Subject:[TowerTalk] Broadband 75/80m Inverted Vee
From:Fred Kleber <kleberf@bellsouth.net>
Reply-to:Fred Kleber <kleberf@bellsouth.net>
Date:Mon, 21 Oct 2013 09:53:19 -0700 (PDT)
The March/April 2010 of NCJ (Nat'l Contest Journal) has a simple approach to
a
broadband 75/80m inverted vee. The article was written by N3HBX. It uses a
pair of inverted vees (58 foot legs) fed at a common point with the ends of
the
inverted vees being 10 feet apart. Of course the apex height and angle of
the
inverted vee may change these values a bit. SWR is less than 2:1 across the
entire band. Takes a little more real estate, but in my opinion a lot
easier
than messing around with all of the other options.
Happy DXing,
Fred, K9VV / NP2X
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