OFF THE BROADCAST BEAMS:
* Maryland Public Television tonight will precede Bill Moyers' "All Our Children" documentary (previewed at left) with its own half-hour exploration of children's issues in the state. And the show launches a year-long focus by MPT and PBS on the topic.
"MPT -- Caring for Kids" can be seen at 7:30 p.m. on channels 22 and 67 and features an appearance by Nancy Grasmick, Maryland's special secretary for the Office for Children, Youth and Families.
The local PBS outlet's programs are in conjunction with both the PBS project "Realizing America's Hope," a year-long effort to draw attention to the needs of children, and Governor Schaefer's declaration of 1991 as the Year of the Family.
* Baltimore's principal outlet for National Public Radio, WJHU-FM 88.1, is planning to carry portions of the radio network's expanded news coverage of the Persian Gulf situation in the event of military action.
Program director Peter Moskowitz says the coverage probably will include hourly newscasts from NPR through the day, as well as an earlier 5 a.m. start time for NPR's "Morning Edition" (normally heard at 6 a.m.).
While the afternoon news magazine "All Things Considered" will be starting early on many NPR stations, WJHU currently intends to stick with the usual 5 p.m. start. The show repeats at 7 p.m.
* Affable comedian Jerry Seinfeld, whose pilot last spring for an unusual sitcom combined stand-up comedy clips with more conventional plotted action, returns to NBC tonight for a longer trial run. Check out "Seinfeld" at 9:30 p.m. (Channel 2) for some observant comedy.
* Basic cable subscribers tonight can enjoy an hour-long concert performance by Irish pop star Sinead O'Connor on the Lifetime network.
Titled "The Year of the Horse," the 10 p.m. special was filmed live last year during O'Connor's world tour, in Rotterdam's Ahoy Sportspalais.
* For another type of music altogether on cable, the heavy metal bad-boy rock group Guns 'n' Roses, Bruce ("Born-in-the-U.S.A.") Springsteen and Van Halen are the first acts in a new series on the MTV video channel.
"Bootleg MTV," at 11:30 p.m., is a show featuring live performances from home video tapes by a variety of artists and hosted by veejay Andrew Daddo. Future artists will include Billy Joel, The Police, Stevie Ray Vaughan, Jeff Beck, Aerosmith, Led Zeppelin and Bon Jovi.
End of story