Inspired by Anheuser-Busch's announcement last week that it would send 22,000 cases of its O'Doul's nonalcoholic brew to troops in Saudi Arabia, WRQX-FM (107.3) morning host Jack Diamond decided to round out the order. He phoned the Pizza Hut in Riyadh on Thursday and requested that the first 50 service personnel who walked in that day be given pepperoni pizzas with extra cheese and a large Pepsi "compliments of Mix 107.3 in Washington." The station has dropped a $600 check in the mail. Also in the mail, at Diamond's request, are notes from listeners -- "just general newsy, upbeat letters," says the host -- to soldiers who are not receiving letters at mail call. Meanwhile, Diamond's new sidekick, Mike Moore, formerly of New Orleans's WQUE-FM, arrived at the station yesterday. Diamond and Moore met for the first time during the Labor Day weekend when the station's new "mix" format debuted.

Speaking of shipments to the Persian Gulf, the National Association of Broadcasters met last week in Boston and announced plans to "raise money to buy and deliver up to 25,000 radio receivers with batteries, to be distributed by Armed Forces Radio and Television Service" for use by American troops.

Morning Menu Changes After only 11 weeks as morning host at talk station WWRC-AM (980), Mark "M.L." Williams, 34, has been given his walking papers. In an announcement to listeners shortly after 8 a.m. yesterday, program director Tyler Cox said, "Scott Carpenter is coming home to Washington and WRC has him." Carpenter, 43, who begins today, was an afternoon drive disc jockey at WPGC-AM/FM (1580/95.5) in the late 1970s, when the stations were simulcast in an adult contemporary format. He has also substituted for Larry King on King's national talk show (heard locally on WTOP-AM, 1500) and until a few months ago was morning host of New York's only country station, WYNY-FM.

Williams's on-air presence was more caustic than WWRC management had hoped for. "It was very clear from audience reaction that we weren't delivering what they wanted," Cox said after the on-air announcement. "We will inform and entertain and not generate controversy for controversy's sake." Cox was quick to add that management is "not afraid of controversy" but that it will not be the basis of WWRC's programming.

Williams, who was hired in July to replace Ed Walker and Bruce Alan, auditioned at Boston's WRKO-AM yesterday morning and spent the afternoon in Providence, R.I., meeting with executives of one of the three talk stations there. Of WWRC, Williams said: "Tyler and I parted in the best of company. He and I thought we had a clear understanding of what he wanted on-air but as we went along, we discovered we had different ideas."

Meanwhile, Walker is busy making commercials and looking for a full-time job in radio while Alan is pursuing opportunities in public relations.

After several months of searching, WETA-FM (90.9) has selected former general manager and announcer Dan DeVany as its new morning host starting Oct. 3. DeVany, who left the station 21 months ago for a job with Minnesota Public Radio, will replace Bill Cerri, who died in July. Some folks at WAMU-FM (88.5) are happy and relieved to see DeVany as the classical station's choice and not their own evening talker, Mike Cuthbert, who was reportedly being considered. It seems that Cuthbert's name and picture are on several hundred coffee mugs to be offered as premiums when the noncommercial station conducts its annual fall fund-raiser from Sept. 29 to Oct. 6.

A Union at the Union Many long hours of negotiations have succeeded in bringing at least two parties together. Pat O'Donnell, assistant executive director of the American Federation of Television and Radio Artists (which represents hundreds of local radio and television editors, reporters and anchors), and Tom Powers, AFTRA's Washington counsel, will go beyond just an attorney-client relationship when they sign the Big Contract -- that is, they're getting married Saturday in Bethesda. Several of those invited to the wedding say it'll be among the biggest media events of the season, except nobody will be working.

From the Waggin' Tongues Chuck Morgan, program director at CBS-owned WLTT-FM (94.7), was spotted talking to the jingle people last week at the National Association of Broadcasters convention in Boston, but he denied that "W-Lite" would soon get a musical face lift.

"I was talking to an old friend, Craig Turner {vice president of Century 21 Programming Inc., a Dallas jingle company}, that's all," Morgan explained. "Of course, that doesn't mean I'm not open to change."