Tents with solar-powered amateur radio equipment with portable VHF / UHF Satellite and High-Frequency antennas in the background, during the annual American Radio Relay League (ARRL) Field Day weekend, the fourth full weekend of June each year. The purpose of the ARRL Field Day is to test emergency radio procedures, which would be put in-use during hurricanes.tornadoes, or other public emergencies.
More information: Link >>> http://buhlplanetarium4.tripod.com/astrocalendar/2020.html#arrlfieldday
(Image Sources: American Radio Relay League, Wikipedia.org, By GCW50 at en.wikipedia (Gary Wilson) - Originally from en.wikipedia; description page is/was here. Original uploader was GCW50 at en.wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=4482940)
Astronomical Calendar for 2020 June ---
Link >>> http://buhlplanetarium4.tripod.com/astrocalendar/2020.html#jun
Related Blog Post ---
"Astro-Calendar: 2020 May / 1st Private, Crewed Space Launch May 27."
Friday, 2020 May 1.
Source: Friends of the Zeiss.
Monday, 2020 June 1.
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Formerly Astronomical Observatory Coordinator & Planetarium Lecturer, original Buhl Planetarium & Institute of Popular Science (a.k.a. Buhl Science Center), Pittsburgh's science & technology museum from 1939 to 1991.
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