[RFI] Ambient Noise Levels

Jim Brown jim at audiosystemsgroup.com
Wed Aug 9 01:45:48 EDT 2006

On Tue, 8 Aug 2006 14:20:50 -0700, Kelly Johnson wrote:

>Anyone else have a theory?

I agree with Tom -- it's noise from far away, propagated just like 
any other RF signal. When 6M is open, for example, I hear birdies 
that I don't hear when it isn't. And during a major blackout not 
long ago, it was noted that the bands got real quiet at skip 
distance from the blackout, even though they were open. 

Jim K9YC

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