That almost always is a switching power supply issue. The normal mode of
excitation is differential between the power mains and other cables. My
neighbor's system bothered me.
The BEST solution to this is a lightning protection type outlet strip that
(if it does not have them) you add capacitors to. I used a system that had F
connectors, eithernet, telco, and power.
This is thousands of times more effective than throwing beads at it and just
hoping common mode impedances are so low the beads do something.
73 Tom
I recently had an internet wireless antenna/unit installed as our DSL was
painfully slow.
Now I notice RFI in the AM broadcast band and into the 160 meter band.
There may more
RFI issues on other bands however at this point I haven't noticed
anything.
I see that Fair-Rate makes a series of "New Low Frequency Suppression
Cable
Component
ferrites, though I am not sure what I should purchase.
It looks like that I should be looking for a "certain impedance" for a
particular frequency.
Any help would be appreciated.
73 de Brian, KG8CO
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Topband Reflector
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Topband Reflector
