MOSCOW, Maine — A Portland-based real estate firm with ties to a Massachusetts construction company has paid $730,000 for nearly 1,500 acres of former Air Force land in Moscow that was once home to a radar system.

A spokesman for the U.S. General Services Administration says the tract was purchased by Western Maine Realty.

Western Maine Realty is owned by Jay Cashman, chairman of the board for the heavy construction company Jay Cashman Inc. of Quincy, Mass.

A company official told the Morning Sentinel there are no firm plans for the property, which includes four buildings.

The buildings once held the Air Force’s Over-the-Horizon-Backscatter radar system, developed in the 1970s and shut down in the 1990s. The equipment scanned from Greenland to Cuba for approaching Soviet missiles and planes.