One of the earliest radio navigation systems was Radio Direction Finding (RDF). Introduced in the 1920s, RDF allowed pilots to determine the direction of a ground-based radio transmitter.

The FCC has received fresh comments from the aviation industry regarding a proposal from Xperi and NAB that would allow more U.S. FM stations to increase HD Radio digital power levels. The aviation ...

Several aviation groups have recently expressed concern about the potential for interference on navigation systems if a proposal to increase power for digital FM stations in the United States is ...

HELSINKI, Nov 7 (Reuters) - Three airports in Eastern Finland are reintroducing radio navigation equipment to facilitate aircraft landings during times that authorities believe Russia is interfering ...