Something very odd but very good

John Allen
Sun Feb 10 19:31:40 EST 2013

Hi Chris - One possibility for this is the Power Lines.  

First, note that some power lines have plastic or ceramic insulators at the poles that have metal connections on each end.  These insulators are frequently used with two in series.  The metal to metal connection gets corroded due to rain, and forms a nonlinear junction that, in the presence of high AC fields, creates power line noise that can be heard (at close distances) up above 400 MHz.

If the wind is high enough to move the insulators enough to break up the corrosion oxidation, presto, no more power line noise.  (For a while).

Regards, John

John Allen - PC Support Solutions 
PC On Site Service and Training - Computer HW/SW/Network debugging, installation and upgrades. M: 508 361-6229

-----Original Message-----
From: [] On Behalf Of Chris Hall
Sent: Sunday, February 10, 2013 4:15 PM
Subject: Something very odd but very good

Though I have had no loss of power or cable TV during this storm suddenly what has been an almost useless AM dial is now
completely free of noise pollution, its as if I had been transported back to 1987 when I first moved to this condo.  I see nothing unusual as far as 
parking lot sodium vapor and hallway lighting. Recently even the FM dial was full of bursts on certain frequencies. I can go up and down the AM dial and it is completely clean. I have been listening to “Big bands and crooners Sundays” on WJIB  all Sunday afternoon on the GE superadio in the kitchen where WBZ and WRKO have over the years deteriorated to the point of being almost unlistenable.
During the past  10 years the RF noise pollution has been so bad WJIB was next to impossible even outside on the balcony, what ever
is going on I hope it stays that way. The water in the snowpack may be helping conductivity a little but  does not explain total disappearance of 
the RF noise floor 

More information about the Boston-Radio-Interest mailing list