I want to establish a microwave link (1.2GHz) between two stations using antennas with a directional radiation pattern. The stations have a clear line of sight to each other. Each antenna is attached to a half-duplex transceiver operating at relatively low power.
If the antennas are too far apart to align "by eye", what's a good procedure to use that is applicable in general for aligning this type of antenna system? I want to align the antennas for best reception (maximum signal intensity, low error rate) at each station when the other transmits.
Assume there is a licensed operator present at each station who can manually operate the transceivers, and that the operators can communicate with each other in real time (with cell phones). Additionally, the transceivers are software-defined radio devices, so it is very easy to get FFT/waterfall displays from them, as well as test with non-standard signals. However, a procedure that uses a common modulation scheme to align (e.g. narrowband FM voice) would be preferred.