Can any field tests be done to see how well an AM Information Station would perform at a given location?
Yes, but these tests are commonly done only where the exact coverage pattern or range needs to be determined. They are not often required, because transmitter power can be set anywhere in the 0-10 watt range to produce a standardized signal level at the FCC-mandated 1.5 km distance from the antenna. This means that unless there is severe terrain, very poor soil or there is an interference potential, almost all TIS stations will produce the same coverage pattern. As a result, pre-testing isn’t often required. If it is desired, however, ISS offers a self-test service called Radio Express.
