[TowerTalk] Re: The Ultimate One Tower System

[Dave D'Epagnier]

The velocity factor in the coax is the same on all bands (of course), but
the amount of phase shift between the two antennas will be different on
different bands if unequal line lengths are used. The horizontal offset
between the two antennas can only be compensated for on one band with this
technique.

	----------
	From:  Guy Olinger, K2AV [SMTP:k2av@contesting.com]
	Sent:  Thursday, December 16, 1999 8:31 AM
	To:  towertalk@contesting.com
	Subject:  Re: [TowerTalk] Re: The Ultimate One Tower System


	On Thu, 16 Dec 1999 10:06:00 -0500, you wrote:

	>
	>At 09:03 AM 12/16/1999 -0800, Jay Terleski wrote:
	>>
	>>The offsets can be compensated for easily with a little longer
coaxial
	>>calbe that acts as a delay line to electrically aliegn the driven
	>>elements, when pointed in the same direction.
	>>
	>>Its already been done.
	>
	>
	>On 3 bands with the same length of coax?

	Sure, you are compensating for a distance in the open with a piece
of
	coax with that has the same velocity factor on the bands in
question.
	It does assume that you are not using 1/4 wave matching sections and
	the like, eg using a stackmatch type of matching.

	>73,  Pete N4ZR
	>
	>Don't forget to update your entry in the contest station database
	>http://206.102.70.3/search.htm

	--.  .-..
	73, Guy

	Guy Olinger, K2AV
	k2av@contesting.com
	Apex, NC, USA

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