[TowerTalk] Broadband 75/80m Inverted Vee

[Roger (K8RI) on TT]

On 10/22/2013 10:54 PM, john at 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 at contesting.com" <towertalk at contesting.com>
> Subject:[TowerTalk] Broadband 75/80m Inverted Vee
> From:Fred Kleber <kleberf at bellsouth.net>
> Reply-to:Fred Kleber <kleberf at 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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