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 The Jicamarca Radio Observatory (JRO) is the equatorial anchor of the Western Hemisphere chain of incoherent scatter radar (ISR) observatories
extending from Lima, Peru to Søndre Strømfjord, Greenland. The JRO is the premier scientific facility in the world for studying the
equatorial ionosphere. It consists of three 1.5 MW transmitters and an antenna array of 18,432 dipole elements, covering an area of approximately
85,000 m2. The study of the equatorial ionosphere is rapidly becoming a mature field due in large part to the contributions made by the
Jicamarca Radio Observatory.The Observatory is about half an hour drive inland (east) from Lima and 10 kms from the Central Highway (latitude 11.95° South, longitude
76.87° West - Satellite Image here). The magnetic dip angle is about 1°, and varies slightly with altitude and year.
The radar can accurately determine the direction of the Earth's magnetic field
and can be pointed perpendicular to B at altitudes throughout the
ionosphere. The altitude of JRO is about 520 meters ASL.
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