"Bob Miller" wrote in message
...
On Sun, 3 Apr 2005 17:57:59 -0700, "Ed Price" wrote:



You can either accept the responsibility to control EMI in your hobby, or
go
back to 11 meters and cable TV.


Ed
WB6WSN


Well, I've got a buzz at my qth, and unplugging the warts, outdoor
lights, florescents and damn near everything else in the house hasn't
solved my buzzzzz -- oh well, onward in understanding rf energy and
the vagaries of its creation... maybe I need to buy a bb gun and start
shooting out the streetlights... :-)

bob
k5qwg




Bob:

You are on the right track; a process of elimination is often the fastest
way to identify the noise source. But don't underestimate the wonders of
seemingly prosaic household systems. Microprocessor controllers are
everywhere, from your washing machine to your sprinkler controllers to your
furnace controls. And that's just YOUR house, your neighbors all have their
own sources to add to the general noise level.

Try a battery-powered AM radio, tuned between stations. See if you can
locate the noise with the built-in directional loopstick antenna. Even if
the noise is being radiated from a number of powerlines, you can still try
cutting power for your entire house. OTOH, some gadgets will have battery
backup, so, like my sprinkler controls, the microprocessor keeps right on
running even when I cut off the power.

Neighbors are notoriously uncooperative when you suggest cutting off the
power to their house while you search for RF noise.


--
Ed
WB6WSN
El Cajon, CA USA