Editing Loran-C (section)

==Transmitters and antennas==
[[File:LORAN Station Malone-Transmitter Middle-Large.jpg|thumb|right|LORAN transmitter bank]]

LORAN-C transmitters operate at peak powers of 100–4,000&nbsp;kilowatts, comparable to [[longwave]] broadcasting stations. Most use 190–220&nbsp;metre tall mast radiators, insulated from ground. The masts are inductively lengthened and fed by a [[loading coil]] (see: [[electrical length]]). A well known-example of a station using such an antenna is [[LORAN-C transmitter Rantum|Rantum]]. Free-standing [[mast radiator|tower radiators]] in this height range are also used{{clarify|date=September 2012}}<!-- How is this supposed to be different than the sentence before last? -->. [[LORAN-C transmitter Carolina Beach|Carolina Beach]] uses a free-standing antenna tower. Some LORAN-C transmitters with output powers of 1,000&nbsp;kW and higher used extremely tall {{Nowrap|412-metre}} mast radiators (see below). Other high power LORAN-C stations, like [[LORAN-C transmitter George|George]], used four T-antennas mounted on four guyed masts arranged in a square.

All LORAN-C antennas are designed to radiate an omnidirectional pattern. Unlike longwave broadcasting stations, LORAN-C stations cannot use backup antennas because the exact position of the antenna is a part of the navigation calculation. The slightly different physical location of a backup antenna would produce Lines of Position different from those of the primary antenna.