[TowerTalk] Inverted Vee vs. Dipole QRN

Bill Turner dezrat at copper.net
Sat Nov 4 11:05:38 EST 2006


ORIGINAL MESSAGE:

On Thu, 02 Nov 2006 16:51:32 -0600, K4SAV <RadioIR at 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














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