Same here. Also, I have a power center into which is connected the TV, VCR
and DVD and the component stereo into which the audio feeds, sending sound
to the stereo speaker. All of these items generate RF that interferes to one
degree or another with my shortwave radio. I have to shut almost all of it
down. The cordless phone undoubtedly generates some too, but so far not that
much.I have two scanners as well, but not much interference from them either
most of the time. The computer does interfere with the scanners on some
frequencies though. With three lengths of wire at least 80 feet long
horizontal, and two more 80 feet long, the antenna will sniff out RF very
well from anybody on the block.

I once had an antenna wire that passed several inches away from a telphone
wire. When I tuned to the LF band, I discovered the local home monitoring
service was running FM radio signals over that phone line, and you could
tell everything going on in someone's home and even understand conversations
if I tuned away fromthe main frequency a bit. There was no physical
connection - it was just the signal in the phone wire generated a magnetic
field in the region near the antenna, and the lines of force cut the antenna
wire, generating a copy of the signal in the telephone wire. Interference is
a hot topic amongst shortwave listeners s and many good discussions are
struck up talking about antennas and matching or tuning systems and all
kinds of other equipment to attenuate, remove or prevent unwanted singls
getting into a receiver. Digital Signal Processing can help as can audio
filtering of various sorts, which is another way to attack interference. But
it is best to prevent it getting in to begin with.

I have read claims that it is possible to sheild computer monitors so they
do not generate as much RF interference in shortwave radios, but I have no
clue how well that works in reality. Many monitors now claim to generate low
amounts of radiation. Supposedly the monotir was opened up and theinside
painted with something that blocked or absorbed any excessive RF. MM