Electrician in Los Angeles to power condition residence

I'm now living in an old house (circa 1938) which seems to be getting
hit with electromagnetic/RF interference from the neighborhood, possibly
through the power grid.

I'm seeking an experienced electrician who could look into and resolve
these conditions as much as possible/reasonable.  Most electricians seem
to be very good at sockets, switches, and lights (general house wiring),
but I thought perhaps that you might have some recommendations for 
troubleshooting of this nature.

Kevin Krell
International Traditional Music Society, Inc.
kevin@[EMAIL PROTECTED]