A hyperbolic grid navigation system.
The third of four versions developed since WWII, a radio navigation system utilizing master and slave stations transmitting timed pulses. The time difference in reception of pulses from several stations establishes a hyperbolic line of position which may be identified on a LORAN chart. By utilizing signals from two pairs of stations, a fix in position is obtained. Loran-C operates in the 100-110 kHz frequency band.
Loran-C is a system of transmitters that generate electromagnetic pulses riding on a 100 KHz carrier. Transmitters are grouped into chains, of which at least three stations share the same frequency of transmitted pulses. The predecessor technology to eLoran.