I strongly suggest using WIRED cameras when
possible. If you read all the threads you
will see that X10 fanatics are constantly
blaming cell phone, radio transmitters,
etc. etc for interference which are excuses
for why RF cameras don't work as
specified. The reasons are numerous,
security, signal quality, privacy,
reliabiltiy, etc.
Here at this location I have 16 cameras, 8
were wireless X10 cameras. I quickly found
that I had to convert them all to wired
cameras.
If you don't know where you are going to
locate the cameras yet, you can run a
conduit from your basement or crawl space
to your attic. This way you can later run
wires from the basement to the attic and
easily run the wire to the eaves whereever
you chose to locate the cameras later on.
This will give you flexibility for future
expansion or changes. Keep in mind that
X10 wired cameras have 60 foot long wires
from camera to connector-head.