YourManLynch

if its giving like a rolling affect across the screen it could be ground loop. The PSU might also not be providing enough power to the camera or if you wired it with Catv and baluns, make sure its a good connection cause it will pick up cross talk or interference. Personally I prefer the baluns where you screw down the terminal rather than the push in ones.

Id opt for the transmitter/ receiver..... 1 receiver on the house.. 1 transmitter on the garage and 2 more transmitters on the apartment. Then from the receiver to the DVR id use Cat5. You'l get the 3 cameras down 1 length of it and have enough for power aswel.