[TowerTalk] Phased verticals one direction

[john at kk9a.com]

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 at contesting.com
Subject: [TowerTalk] Phased verticals one direction
 From:	 Bob Ad5vj <ad5vj at 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?