To get colour video transmission back to the receiver you are going to need about 5Mhz bandwidth. This is on a 2.4 Ghz "free access" band. You will have lots of problems with quality & transmission dropouts. What is going to power these wireless cameras? You can get the generic 2.4Ghz receiver /
transmitter gear & try your luck BUT remember that these are 4 band NOT 4 channel. You only get to use one of four frequencies. So for two cameras you will need two set running on different frequencies. THEN at the receive end you will have two receiver composite video outputs that you want to display on ONE screen. If you are not using a recorder then you will need a sequencer to swith between the cameras or a quad adaptor to show on one screen.
Not such a simple job now hey ?
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