Usually people phase to get both broadside and endifre type patterns.
It sounds like you would just like to get some gain toward EU and KK9A's
idea is probably sufficient.
Mike W0MU
W0MU-1 CC Cluster w0mu.net
On 5/2/2012 10:34 AM, john@kk9a.com wrote:
> It would be easier to just feed one vertical with a random length of 50
> ohm coax and make the other vertical a parasitic reflector.
>
> John KK9A
>
>
>
>
> To: towertalk@contesting.com
> Subject: [TowerTalk] Phased verticals one direction
> From: Bob Ad5vj<ad5vj@ad5vj.com>
> Date: Wed, 02 May 2012 10:44:20 -0500
>
>
> My first Rodeo on phasing, need confirmation please.
>
> I am working on 2 34' phased verticals spaced 34' for 40 meters
> pointing in a
> NE/SW line.
>
> SW ant we call #1
> NE ant we call #2
>
> I am wanting ONLY NE direction.
>
> Using my MFJ-259B I have determined the length of coax I have (RG-11)
> to
> measure 106.2' to the fault.
>
> Physically measuring the coax it comes to exactly 72'.
>
> Dividing 72/106.2 I get a measured velocity factor of .6779 according
> to the
> MFJ manual.
>
> (468/7.150)/2 =32.7' per 1/4 wave
> 32.7' X 3 = 98.1818
> for 3/4 wavelength
>
> 98.1818 X .6779 = 66.55'
>
> So this should be the physically measured coax length for the 3/4
> wavelength
> going to the #1 vertical.
>
> Then I do the same for a 3/4 coax wavelength from #1 to #2 antenna.
>
>
> Does that sound right?
>
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>
>
>
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