Tag: Arecibo

Arecibo Observatory Ionospheric Heating Campaign Under Way

Arecibo Observatory in Puerto Rico is conducting an ionospheric heating campaign July 24-31, using HF. “The new Arecibo ionosphere HF heater nominally transmits 600 kW net power and has a unique Cassegrain dual-array antenna design that increases gain of three crossed dipoles for each band, using the signature 1000-foot spherical dish reflector,” explained Chris Fallen, […]

Greetings, E.T. (Please Don’t Murder Us.)

On Nov. 16, 1974, a few hundred astronomers, government officials and other dignitaries gathered in the tropical forests of Puerto Rico’s northwest interior, a four-hour drive from San Juan. The occasion was a rechristening of the Arecibo Observatory, at the time the largest radio telescope in the world. The mammoth structure — an immense concrete-and-aluminum […]

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