[RFI] How much RF does your power company deliver along with the AC?
jim at audiosystemsgroup.com
Fri Aug 21 11:38:58 PDT 2009
On Fri, 21 Aug 2009 13:15:20 -0500 (CDT), Christopher E. Brown wrote:
>With power back, even with everything but a couple lights (filament, not
>fl), strong RF on the AC lines, and s5 - s7 on the dipole.
>Starting to think the best option would be a good filter between the
>disconnect and sub-panel
Your proposed solution is based on the assumption (almost certainly
false) that the noise you hear is coupled into your home on power lines.
The FAR more likely conclusion to be be drawn from your observations is
that when the power in your neighborhood is off, the many noise sources
in your neighborhood (and in your own home) cannot produce noise. Much of
that noise is RADIATED by power lines (both inside and outside of homes
where that noise is produced), or by other wiring connected to those
noise sources, and picked up by your antenna. And, of course, faulty
insulators on power lines may produce noise, which the power lines also
Unfortunately, there is no magic bullet you can apply at your QTH. That
noise still must be eliminated at the source. The most you can do is use
antenna directivity (and common mode chokes) to minimize what you hear of
Jim Brown K9YC
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