[RFI] Mystery cyclic buzzing

[Jim Brown]

On 4/13/2012 11:27 AM, Scott Yost wrote:
> I think we need to do exactly this, and thus build a knowledge base of RFI sources to help narrow down our searches.

The "exactly this" that we all need to do is carefully poke around our 
homes looking for noise sources. Virtually ALL equipment should be 
considered a POSSIBLE noise source if it has a power supply, a 
microprocessor, a digital clock, even an analog oscillator.  BATTERY 
CHARGERS and WALL WARTS of all types are notorious sources of noise.  
This isn't news unless you've ignored RFI for the last 10 years.

We don't need a catalog of "ths sounds like this" as much as we need an 
awareness of the ubiquity of these noise sources.

73, Jim K9YC