Many local stations are gearing up for the Hands Across America countdown with a series of public service announcements, sign-up parties and special events for the May 25 effort to raise money for America's poor.

Tomorrow, WDJY-FM (100.3) will host a sign-up event at Prince George's Plaza from noon to 4 p.m. In addition to the station personalities, recording artist Meli'sa Morgan will appear. David Adler of WLTT-FM (94.7) will be enlisting participants at the Old Post Office Monday from 11:30 a.m. to 1:30 p.m. WASH-FM (97.1) will join First American Bank Tuesday for a rally from noon to 1 p.m. at Connecticut and L. People are urged to bring a can of food for a local charity. WFMD-AM (930) in Frederick is sponsoring a sign-up party Thursday from 4:30 to 6 p.m. at the Francis Scott Key Mall.

Despite the apparent enthusiasm for the event, however, the theme song for "Hands Across America" has not caught the fancy of program directors. Many joined the national simulcast effort a few weeks ago, then dropped the song.

"It is a pretty bad song, but we will probably play the song more next week. But the song is not the issue. We are going to run updates on the progress of the event and increase our public service commitment next week," said Mark St. John, WAVA-FM (105.1) program director.

Several stations have bought places in line for "Hands" Sunday and have been giving the tickets away to listeners. WCLY has reservations in front of the White House and is matching each of its giveaways with a ticket to someone who couldn't afford the price of a place in line. WDCU-FM (90.1) plans to do a remote from the Museum of Natural History from noon to 5 p.m. WWDC-FM (101.1) purchased 101 tickets for the area at Connecticut Avenue and DeSales Street NW. WASH has 20 places reserved at the Sylvan Theater. WRQX-FM (107.3) has bought places in the last mile within the District and is planning a remote from 2 to 4 p.m. from Jenifer Street and Wisconsin Avenue NW . . . WDJY has about 30 places in the line at South Dakota Avenue and Gallatin Street NE. Changing Jobs

WAVA has replaced Mike Beach with Shadow Smith, formerly of WRQX and the old WPGC. Two of his WAVA colleagues, Loo Katz and Don Geronimo, are also alumni of the old WPGC. Smith, who was born at Fort Belvoir, Va., has worked in Denver, San Francisco and New York. He left Q-107 in February and will now be doing the 2-6 p.m. shift at WAVA . . . Katy Daley, a member of the WMZQ-AM (1390) staff for eight years, has been named program director . . . Diona De Shields has left her post as promotions and public relations manager at WAMU-FM (88.5) for a job in Boston as director of public information for the Massachusetts Association of Mental Health . . . Gregg Diggs is now music director at WKYS-FM (93.9). Malcolm X Remembrances

Brute Bailey, the program director and morning host at WDJY, will be the emcee for the annual Malcom X festival at Anacostia Park Sunday from noon to 7 p.m. WPFW-FM (89.3) has organized a retrospective of Malcolm's X's life Monday from 1:30 to 4 p.m. Fundraisers

Jim Elliott and Scott Woodside of Q-107 will share master of ceremonies duties tonight at 6 at an event for the Broadcasters' Child Development Center at Duke Zeibert's restaurant . . . Ride Festival tomorrow at Gallaudet College. Starting at noon, participants can ride their bicycles on either of three routes from the college at Seventh Street and Florida Avenue NE. The biking will be followed by a live feed from the New Orleans Superdome of a 3 p.m. concert with Huey Lewis and the News, Daryl Hall and John Oates, and the Hooters. The tab is $21 and benefits the Statue of Liberty restoration . . . WKYS is one of the official hosts for Sunday's Hometown Run, sponsored by the Washington Urban League. The station will provide music from noon to 5 p.m. at Western Plaza in front of the District Building . . . WHUR-FM (96.3) is sponsoring a radiothon for the Southern Africa Support Project Monday from 6 a.m. to 1 p.m. from Western Plaza. The goal is $10,000 . . . The Washington Council for Progressive Radio, which is trying to raise money for a studio in order to broadcast on a cable network, is having a series of $5 parties. Those interested in supporting alternative radio can donate at the Back Alley Cafe behind 18th and M streets NW at 9 p.m. the next two Tuesdays . . . In another event for the Statue of Liberty, WRQX, WAVA, WBMW and WINX-AM (1600) will be competing to raise tips and donations at an American food festival Wednesday at the Third Edition at 7 p.m.

Up Close Donnie Simpson of WKYS will be doing his show from a window at the downtown Woodward & Lothrop next Friday from 6 to 10 a.m.