I have a number of locations in parking lots that require an RF link back to the building. Transmitters will be located on existing light poles with the recievers on building roofs. Ranges vary from 200' to 700' Line-of-sight. I have some locations where point-to-point will be needed; and at two locations, multipoint-to-point may be the solution. Since there is only one camera per transmitter, the bandwidh needed is pretty small.
So what manufacturers have worked for you? What price ranges are we talking about?