On 1/2/2012 8:23 PM, Richard Fjeld wrote:
It is simply a 12V incandescent bulb. Apparently the small metal box in-line
on the power cord is a switching PS instead of a step-down transformer.
YES. This is a VERY common noise source, and finding a step-down
transformer for products like this
For those of you interested in tracking down sources of household RF
noise here is an article describing one source you may not have
considered: cellular telephone chargers. Modern cell phones have become
thinner and thinner and are commonly recharged via a USB connection. A
comprehensive
Thanks Kevin
I checked my families cell phone chargers and I'm OK (for now.)
It never ends. I periodically shut off the main breaker to our house and
listen on HF with battery power to see if there are any new RFI culprits. My
kids are
always using some new electronic gadget. I just
I saw a post about finding sources of noise, and I would like to share one that
surprised me. The other night, I had 20/s9 noise on 75 meters all across the
band. I got out my portable AM radio and was trying to find the cause when I
heard a click and the noise was gone. I knew something had
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