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 Greater Columbus Convention Center is a convention center located in downtown Columbus, Ohio, United States, along the east side of High Street. The convention center was designed by Peter Eisenman, constructed in 1993, and expanded in 1999. Property management company SMG oversees day-to-day operations of the 1,700,000-square-foot (160,000 m 2) facility, including 426,000 square feet (39,600 m 2) of exhibit space, two ballrooms, and 61 meeting rooms.