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Re: [RFI] OT? Why Does 1450 Wobble & 970 Not?

To: "RFI List" <rfi@contesting.com>
Subject: Re: [RFI] OT? Why Does 1450 Wobble & 970 Not?
From: "Andrew Ingraham" <ingraham.ma.ultranet@rcn.com>
Reply-to: Andrew Ingraham <ingraham.ma.ultranet@rcn.com>
Date: Wed, 21 Nov 2007 16:11:03 -0500
List-post: <mailto:rfi@contesting.com>
> It is that usual late afternoon/early evening sound
> common to AM signals - kinda distorted and drifting -
> it's not a frequency change but rather a propagation
> thing.

If it's random, it might be fading, due to skywave and changing
ionospherics.  The lower frequency may be less effected by it because of a
more solid groundwave.

If it's regular, it might be a beat frequency between it and another station
a few Hz away.

You often hear both effects, especially at night.


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