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.
Laid out over 250 acres, the Indiana State Fairgrounds & Event Center is home to more than 1,000,000 square feet of event space and offers the most flexible event venues in the state of Indiana. Host to more than 400 events every year, there is Something Happening Here. All Year. There's more to explore >.