a radio station that broadcasts a directional signal for navigational purposes

a bearing of a transmitter

A transmitter which is stationary and allows boats to determine their position.

A navigational aid that emits radio waves for navigational purposes. The radio beacon's position is known and the direction of the radio beacon can be determined by using a radio direction finder.

A radio beacon is non-directional transmitter that usually transmits a constant signal on a specified radio frequency.