That only assumes that the dipole is up high enough to matter - and to show
the 2 typical lobes - this would have to be at least 1 wavelength - and more
than likely, substantially higher - like 3-4 wavelengths. Other than that -
they are virtually identical - both have vertical and horizontal
components - especially at low (less than 1 wavelength)......
No difference other than convenience.
Scott
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of Bill Turner
Sent: Saturday, November 04, 2006 11:06 AM
To: K4SAV
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Inverted Vee vs. Dipole QRN
ORIGINAL MESSAGE:
On Thu, 02 Nov 2006 16:51:32 -0600, K4SAV <RadioIR@charter.net> wrote:
>An inverted vee is not more susceptible to QRN than a dipole.
------------ REPLY FOLLOWS ------------
I have to disagree, for two reasons:
1. An inverted vee has a vertical component of radiation, and man-made
noise is predominantly vertically polarized, so an inverted vee will
pick up more man-made noise than a dipole.
2. An inverted vee with an apex angle of about 90 degrees is almost
perfectly omnidirectional in the azimuth plane, whereas a dipole is
quite directional, having sharp nulls off the ends. If you are lucky
enough to have the dipole's end pointed toward a noise source, the
dipole will be quieter than the vee.
Bill, W6WRT
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|