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 in the center of the country, the center of Ohio, the center of Columbus, and it's surrounded by restaurants, shops, hotels and entertainment venues. Inside, the Convention Center has 1.7 million square feet of flexible, customizable space. Ohio Department of Transportation.