I'm interested in building a relay for analog video sent from an R/C aircaft. The idea is to get around obstacles like hills and increase distance a bit.
Rather than just applying more power, I wondered if I could build something that would act as a relay station for everything from about 5700-5900Mhz.
I'm thinking about an amp in the range of 0.5w to 1Wa with a directional antenna hookup up to each side. Several of us would be flying behind a hill or obstacle, while the relay would be in a position that is LOS to both us and the aircraft.
I'd have to keep the input antenna from "seeing" the output antenna as much as possible, how much of an issue is this? Would two patch antennas facing away from each other work?
What issues would I need to be aware of with the amp?
Also, if is this easier or harder at different frequencies? Maybe 2.4Ghz, or 1.3Ghz or 900Mhz?