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[TowerTalk] Inverted Vee vs. Dipole QRN

To: towertalk@contesting.com
Subject: [TowerTalk] Inverted Vee vs. Dipole QRN
From: "Kelly Johnson" <n6kj.kelly@gmail.com>
Date: Thu, 2 Nov 2006 13:59:16 -0800
List-post: <mailto:towertalk@contesting.com>
Is an Inverted Vee inherently more susceptible to QRN than a dipole or yagi?

My noise levels on 80m are much, much higher than my noise levels on
40m.  I mean on the order of 6 or 7 S units higher.  I'm looking for
an explanation.  I have a 2 element yagi on 40m, but an inverted vee
on 80m.  Is it explainable by the vertical polarization of the
inverted vee?  Is it just 80m vs 40m?  Is it the location of my
inverted vee (ie.closer to the overhead power lines)?

While I'm at it, how about an explanation of why the noise level on CW
(with a 250Hz or 500Hz filter in line) is lower than SSB (with a
2.4KHz filter in line) on 40m, but not on 80m.  It seems as if my S
meter reads about S1 on a good day on 40CW and about S5 on 40SSB, but
reads about S7 on 80CW and S8 on 75SSB.  I would expect noise levels
on the S meter to drop when I kick in the 500Hz filter, but it doesn't
seem to do so on 80 meters.  Could this just be a wacky S meter?  BTW,
I'm using an FT-1000MP
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