Visitor's
contributions
Lessay (Normandy)
|
Lessay (Normandy) LORAN C 100 kHz EN
My highly regarded visitors of this web site:
I invite you to send photos of MW and LW antennas from all over the world
to be published on this site "MW and LW antenna sites from all over the world".
|
|
|
|
|
|
|
|
Lessay (Normandy) LORAN C 100 kHz by Dominique KREMP, Normandy
|
|
|
250 kW, 100 kHz
Single mast of 213 m
h = 0,071 lambda
|
|
LORAN (LOng RAnge Navigation) is a terrestrial radio navigation system using low frequency radio transmitters to determine the location and speed of ships and aeroplanes.
For LORAN-C several transmitter stations are needed. The system consists of a main transmitter (Lessay is a main transmitter) and several sub transmitters, which are located several hundred kilometers from the main transmitter. This large coverage is possible due to the low frequency of 100 kHz and the good ground conductivity of sea water .
Each station transmitts impulses. The different delays of these signals coming from the stations are received i.e. on a ship and are used to determine the position and the speed of the ship.
LORAN was introduced during Second World War. Although nowadays GPS (Global Positioning System) is mainly used for determining the position of a receiver on earth, LORAN is still operating in Europe mainly for military purpose because it is considered as highly reliable. The United States and Canada turned off the LORAN system.
|
|
|
|
Aerial with transmitter building
|
|
|
Military zone
Not allowed to enter
|
|
Seven guy levels including top load with markers
|
|
|
Top of the mast with top load
Red balloons are used only to mark the wires of the top capacity, making them more visible to aircraft.
|
|
Lessay ( Normandy ) LORAN C
green arrow
Active google map
you may
enlarge,
shrink, shift,
change the view mode,
etc.
|
|
Lessay ( Normandy ) LORAN C
green arrow
Google map
you may
enlarge,
shrink, shift,
change the view mode,
etc.
|
|
Where is Lessay ( Normandy ) located?
Google map
you may
enlarge,
shrink, shift,
change the view mode,
etc.
|
|