Mark Manges will get his chance to move up from the Frederick Falcons of the Interstate Football League. The Washington Federals, striking while the publicity iron was warm -- four days since Manges was profiled in The Washington Post -- introduced the quarterback of Maryland's 11-0 regular season in 1976 as one of six new signees yesterday for their U.S. Football League venture.

The others: ex-Terp LB Brad Carr, a 1978-80 Canadian Football Leaguer; DT Steve Jacobsen, Virginia Tech via Gaithersburg High; OT Larry Brown, NFL Kansas City parts of 1978-79; punter Greg Caldwell, James Madison U. (cut by Redskins); WR Don Porter, Eastern High, Howard . . .

The Senate Judicary Committee, considering NFL antitrust exemption legislation, heard John Bassett, owner of USFL's Tampa Bay club and once the man who coaxed Larry Csonka and NFL Dolphin friends onto his World Football League team in Memphis, attack Pete Rozelle's league yesterday. At least 16 more cities can support an NFL team, said Bassett, who has sued over refusal to admit Memphis . . . In Bay City, Mich., fan Randy Edgar has sued for immediate refund of $512.50 he paid for 41 tickets to last Sunday's canceled Detroit Lions game. "I wish," said Edgar, "I had a job where I could get $12.50 from 50,000 people and sit on the money for a week and earn interest on it."