WMAL-AM (630), home base for the Redskins' broadcasts, is planning 10 hours of interviews, facts and hoopla around the 'Skins-Dallas game Monday.

Starting at 3:05 p.m., Bill Trumbull and Chris Core will broadcast live from Dallas, reporting about the city as well as the football mania. They will extend their show 30 minutes and then switch at 7:30 p.m. to Johnny Holliday at Cowboys Stadium. Fifteen minutes before kickoff at 9 p.m., Frank Herzog, Sam Huff and Sonny Jurgensen will give the latest details on the prime rivalry and then do the play-by-play. The postgame show will feature John Riggins. About 12:30 a.m., "SportsCall" with Ken Beatrice will open the lines until 3 a.m.

On WMAL's normal football season schedule are Beatrice nightly at 7:05 p.m., Jeff Bostic with Trumbull and Core weeknights at 6:45 p.m. and Dave Butz with Frank Harden and Jackson Weaver every Friday at 8:50 a.m. On Saturdays Jurgensen and Huff host the "Sonny and Sam Show" at 9:15 a.m. and 5:30 p.m.

Other members of the 'Skins family are reporting around town: Coach Joe Gibbs is giving a two-minute report on WTOP-AM (1500) Monday through Friday at 6:53 a.m. and 5:21 p.m. and on Saturday at 8:41 and 10:41 a.m. WTOP is also carrying CBS Radio's weekend sports update, "Sports Central," on Saturday and Sunday every hour beginning at 2:25 p.m.

Bobby Beathard, the 'Skins general manager, joins WXTR-FM/AM (104.1/1560) Monday through Friday at 7 and 8:30 a.m. and at 5 and 6:30 p.m.

Butz is also doing a 60-second report for WAVA-FM (105.1) Monday, Thursday and Friday at 7:20 a.m. and 5:40 p.m. And Russ Grimm joins WPKX-FM (105.9) Monday through Friday at 7:25 a.m. National Public Radio's "Morning Edition," heard on WAMU-FM (88.5), drafted former 'Skin Mark Murphy for its football segment every Thursday.

Jim Elliott and Scott Woodside of WRQX-FM (107) will host a "watching party" Monday for the 'Skins from 7 p.m. to midnight at the Copa in Springfield. Ernie Kaye of WWDC-AM (1260) is throwing a 'Skins party at the Bayou in Georgetown starting at 8 p.m.

In non-Redskins events, WWRC-AM (980) kicks off its season of U.S. Naval Academy games coverage tomorrow with the contest against North Carolina at 7:30 p.m. . . . John Lyon of WMAL will broadcast live from the tailgate parties at Byrd Stadium tomorrow before the University of Maryland-Penn State game. Lyon's party starts at 10:35 a.m. The pregame show begins at 11:50 a.m. with Johnny Holliday, who will do the play-by-play with former 'Skin Pete Wysocki. After the game, "SportsCall" is scheduled until 6 p.m. Q-107 is also having a tailgate party tomorrow from Byrd from 9 a.m. to noon, but not a remote broadcast . . . WWDC-AM will broadcast the Notre Dame games, courtesy of the Mutual Radio Network, beginning Sept. 14 with Notre Dame versus Michigan at 2:40 p.m. The games will be preceded by a 15-minute show with sportscaster Kaye . . . WPKX-FM/AM (105.9/730) will be the home of the University of Virginia games starting Sept. 21 at 12:30 p.m. against Georgia Tech . . . And, WMAL will carry all the NBC Radio Monday and Thursday night football games. The Revolving Door

After 35 years on the air at WGMS-FM (103.5), Bob Davis is cutting back on his schedule. He is giving up hosting "Tempo" on Fridays from 10 a.m. to 3 p.m. but will continue to do "Entertainment" on Saturday at noon and occasional theater reports . . . Ernesto F. Betancourt, formerly acting director of Radio Marti, who is credited with coining the phrase "Alliance for Progress" used by John Kennedy, has been named director of the Radio Marti program at the Voice of America . . . Martin Goldsmith, program director and host at WETA-FM (90.9), is relinquishing his program director duties but will continue as host for "Music from Washington" and "Desert Island Discs."

In the public relations departments: Mary Chakeris is leaving the promotion slot at WETA Sept. 20 and moving to California . . . Vivienne Vaughan has been named promotion director at WRQX-FM (107.3). Audition Call

Children's Radio Theatre needs actors of all ages for a holiday season play by Tomie dePaola to be broadcast Christmas Day on public radio. The auditions will be at the Kennedy Center's Theater Lab Sept. 14 and 15 from 12 to 6 p.m. Datebook

Beverly Fox of WLTT will be participating in a Hug-A-Thon for United Cerebral Palsy tomorrow at Prince George's Plaza from 2:30 to 4:30 p.m. Scott Baio from the old "Happy Days" will also be hugging . . . Chris Jagger and Sandy Weaver of Q-107 will be broadcasting from the three stages of Adams-Morgan Day Sunday along 18th Street and Columbia Road N.W. from 12 to 7 p.m.