"Wayne" wrote:

I can't tell you what works, but I can tell you what doesn't. I bought some
wireless FM Radio Shack units (because they were cheap and easy to install),
the kind that transmits right over the house electrical wiring, so you can
just plug the units in any electrical outlet, no special wiring required.
The only ones that work are ones that are on the same circuit. Of course,
if your house is big enough for an intercom, it is unlikely that any two of
them are going to be on the same circuit. Those that are on different
circuits do not receive the broadcast clearly, if they receive it at all.
Don't waste your money on this technology.


I bought a set of them a year or so ago. [Radio Shack Cat. No.
43-3105] I have them on 3 different circuits but only 2 communicate.

The non-communicating one is on the opposite leg of the feed. I
bought another gadget that bridges the legs but that doesn't seem to
help.

I suspect there is some other interference going on but haven't found
the source. [I should probably try it again now that my daughter has
gone to college with her refrigerator, stereo & computer]

Jim