The Ionosonde Juliusruh is a facility of the institute for atmospheric physics near Juliusruh

Juliusruh

Juliusruh is a village on the northern coast of the island of Rügen in northeastern Germany. Juliusruh is part of the municipality of Breege. Juliusruh and Breege combined have 821 inhabitants in an area of 15,99 km² ....

 in northeastern Germany for sounding the ionosphere

Ionosphere

The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere...

 with radar

Radar

Radar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...

 systems in the short wave range (frequencies between 1 MHz and 30 MHz). The landmark of the station is a 70 metre high grounded free standing steel framework tower, which was built in 1960/61 and which carries a cage aerial

Cage aerial

A Cage aerial is a radio antenna, which consists of the top portion of a tower or mast and of several parallel wires, which are radially arranged around the lower part of the mast. one advantage of the cage aerial is that the supporting tower can be grounded, allowing it to be used for other radio...

 for the transmitter of the ionosonde

Ionosonde

An ionosonde, or chirpsounder, is a special radar for the examination of the ionosphere. An ionosonde consists of:* A high frequency transmitter, automatically tunable over a wide range...

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External links

• http://www.ionosonde.iap-kborn.de/indexeng.htm
• http://www.skyscraperpage.com/diagrams/?b45849