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, KL3WX, a researcher at the University of Alaska-Fairbanks HAARP facility. He has reported that Arecibo would use 5.125 or 8.175 MHz, depending upon ionospheric conditions, but emphasized that these are estimates and frequencies may be adjusted slightly. On July 25, Arecibo was transmitting on 5.095 MHz.

via American Radio Relay League | Ham Radio Association and Resources – http://bit.ly/2tRv1xM

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