New Federal Aviation Administration tower rules that take effect in this month could open the door for tougher scrutiny of electromagnetic interference from the FM radio band to aviation communications.
Existing rules state that any tower taller than 200 feet above ground level or that may interfere with the flight path of a nearby airport requires FAA notification and FCC registration on the FCC’s Antenna Structure Registration system. The FAA’s “Safe, Efficient Use and Preservation of the Navigable Airspace,” released in 2010, outlines minor updates to federal rules for broadcasters with towers near airports who want to modify their existing towers or plan new construction.
However, the new rules, which take effect Jan. 18, 2011, leave open future deliberations over electromagnetic interference between FM broadcasts and navigation signals.See details at Radio World.