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Re: [TowerTalk] K7C - One-Way Propagation?

To: <donovanf@starpower.net>, <towertalk@contesting.com>
Subject: Re: [TowerTalk] K7C - One-Way Propagation?
From: "W0MU-Mike Fatchett" <w0mu@w0mu.com>
Date: Mon, 3 Oct 2005 11:17:12 -0600
List-post: <mailto:towertalk@contesting.com>
They were booming in here on 40 and 80 CW this am.  Worked them with 400
watts and an R8 Vertical on 40 and a random wire on 80.

Whatever they have there works to the states anyway.

Mike W0MU 

-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of
donovanf@starpower.net
Sent: Monday, October 03, 2005 10:06 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] K7C - One-Way Propagation?

Bill,

In my experience, "one-way propagation" is primarily a result of large
differences in the noise and interference environments 
on each end of a propagation path.   This is a very common 
phenomenon when one end of a 160, 80 or 40 meter path is in full daylight
and the other end is in full darkenss.

On the daylight end of a 160, 80 and 40 meter path, the D layer
significantly attenuates atmospheric noise and adjacent frequencies are not
typically occupied by strong signals.  On the full darkness end of the path,
atmospheric noise is significantly elevated and nearby frequencies are often
occupied by very strong signals.

73!
Frank
W3LPL




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