If you want to watch the Super Bowl on a portable television set, don't try it in Tampa Stadium, site of Sunday's silver anniversary game. And if it happens to rain on game day, prepare to get a little wet.

Portable TVs and umbrellas are among the items barred from the stadium as part of increased security for the game. Also prohibited are camcorders, still cameras, headset radios, bottles, cans and other containers. Cameras and TVs have been popular items at previous Super Bowls, with flash bulbs popping at the opening kickoff and halftime show.The host city began tightening security Monday as the AFC champion Buffalo Bills and NFC champion New York Giants arrived in town. Bob Smith, Tampa's public safety administrator, said 18 law enforcement agencies will assist in the effort to combat possible terrorism resulting from the Persian Gulf war.

Besides the barred items, spectators may be asked to pass through metal detectors and X-ray equipment as they enter the stadium. A 6-foot chain link fence is being erected around the stadium about 50 feet from the facility's permanent fence, creating a buffer zone. In addition, portable concrete barriers are being placed around the stadium to control vehicle and pedestrian traffic.

Smith said 500 officers would be in and around the park on game day, and the Federal Aviation Administration is being asked to restrict airspace to 10,000 feet for a half-mile and 3,000 feet for five miles around the stadium.

The NFL was pleased with the security arrangements for Sunday's conference championship games.

"Everything from a security standpoint went very well from the time the gates opened through the postgame celebration," said Roger Goodell, director of club administration and international development, who represented the league at the game in Buffalo.

"The police and NFL officials want to thank the Bills organization and fans who cooperated all week with the increased security measures." Goodell said there were six arrests in the crowd of 80,324, compared to 18 for the Bills' playoff opener.