[RFI] 160m-5mhz noise?

Jim Brown jim at audiosystemsgroup.com
Thu Nov 5 17:37:04 PST 2009

On Thu, 05 Nov 2009 19:28:40 -0600, Sam Morgan wrote:

>I don't have >anything portable or rotateable at those frequencies 
>(1.8mhz - 5.0mhz)

One strong possibility is a switching power supply for lighting, a 
battery charger, or other appliance. You probably have a portable AM 
radio, and the top of that band is just below 160M. Find a frequency 
near the top of the band and walk around with it. 


Jim Brown K9YC

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