Aircraft Communications Addressing and Reporting System () data is used to send messages to and from commercial airlines' aircraft. A good explanation can be found here. The frequencies used in the United States for ACARS are:
About the Ohio Expo Center. In 1886, what is now known as the Ohio Expo Center became the permanent home of the Ohio State Fair. Years of planning and the acquisition of more than 100 acres of beautiful land adjacent to a major railroad intersection in Columbus culminated on August 30, 1886 when the 37th Ohio State Fair opened its gates.
The Ohio Building is a true showcase facility, all circular clear-span space and floor-to-ceiling glass walls. Its light, airy interior offers 14,095 sq. ft. of space in a 135â² diameter circle. Ceiling height rises to 20â² in the center. It is ideal for banquets, parties, small trade and consumer shows, and meetings.