I have explained it this way:
You've had a long, hot summer and it hasn't rained for months. Suddenly it
rains and it pours in through the roof that you hadn't noticed had lost a
couple of slates. Do you blame the weather or the builder of the house?
Similarly, your neighbour can say that he never had interference before, but
then, he wasn't aware he had a problem till someone fired up a radio
transmitter next door.
The rarity of interference from a radio amateur to/from a neighbour is why
plasma TVs, switchmode supplies, hi fi systems, video recorders et al have
such poor emc performance - it's a cost that is statistically unnecessary to
the masses.
David
G3UNA
"Often the problem, is convincing the "affected party" that it really is a
defect in their equipment, or installation thereof, and not yours. Of
course, you need to be pretty darned sure that is the case! "
The FCC used to send out a packet of information to people who complained
explaining in part, that it was probably their equipment that was
inadequate. I don't know if this is still being done. Perhaps you could
get one. It sort of breaks the ice.
Rich, n0ce
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