I had the same problem. to fix it do the
following
1 make sure they are not on the same channel.
They should be like this cam 1 A1 cam2 A2
ect:
2 make sure the dot on the camera antenna
is facing the flat side if the reciever
as best you can
3 If that does not work then you can
a problem with cordless phones. if
your cordless phone is 2.4 GH it will
act up with your camera. To check
Un plug your phone from the wall ac.
I had to change to 5 GH on my phone.
4 Last you may have a phase problem
with the wiring in your house. For
that you must try a different plug
outlet in your house. To check if
this is your problem. Put all your
cameras in the same room with the
reciever and see how it works. Then
take the cam to another room. If you
your signal is poor after adjusting
your antennas ,try a different wall
outlet or go to another room.
If you are still having problems E-mail
me GOOD LUCK