To no one's surprise, the summer Arbitron ratings show that Frank Harden and Jackson Weaver, the sunrise institution at WMAL-AM (630), continue to dominate the morning hours in the Washington market.

At every station, the morning show fuels the rest of the day's energy and earnings. When one program has been the leader for so long, as Harden and Weaver have for 25 years, the competition either tries something outrageously or sensibly different, or copies one part of the leader's formula. Doug (The Greaseman) Tracht of WWDC-FM (101.1) -- whose show warrants an "R" rating next to H&W's Legion of Decency rank -- continues to build his mainly young adult audience and is holding down second place. As long as Washington is news-hungry, WTOP-AM (1500) continues to win respectable numbers and is now ranked fourth. Both WKYS-FM (93.9) and WHUR-FM (96.3) are pulling the fans of urban sounds and light-hearted conversation, with WKYS holding on to the third spot, but dipping slightly to the rebounding WHUR, which is now sixth. The overall ratings leader, WGAY-FM (99.5), logs in at fifth in the morning and continues to provide a break from the high-energy formats.

The Harden and Weaver influence is best seen in the number of talking couples now bringing a fast-paced style to the breakfast and commuting bunch. WASH-FM (97.1) is the latest to complete a morning duo: "Continental Breakfast" debuted last month with British-born Arthur Crofton, who now shares the duties with Linda Sherman. Selected over 10 other candidates, Sherman is a spry conversationalist about music, wine and current events. She worked in radio news for 10 years, including most recently as a news anchor at WYST in Baltimore. WHUR is expected to announce some changes in its morning show in the next two weeks.

Here's how the 12-years-and-older listener feels about the 6 to 10 a.m. pack, according to the summer 1985 Arbitron Ratings: Rank Station Summer 1985 1. WMAL-AM (630) 10.3 2. WWDC-FM (101.1) 8.8 3. WKYS-FM (93.9) 7.7 4. WTOP-AM (1500) 6.6 5. WGAY-FM (99.5) 6.3 6. WHUR-FM (96.3) 6.0 7. WRQX-FM (107.3) 5.3 8. WCLY-FM (95.5) 4.9 9. WMZQ-FM (98.7) 4.0 10. WLTT-FM (94.7) 3.8 All the News . . .

John Moen, the program director at WASH for the last nine months, left this week. "I guess basically it is a disagreement over the direction of the station," said Moen. Several other staffers have left WASH in recent weeks . . . WETA-FM (90.9) announced it will carry National Public Radio's new "Weekend Edition," anchored by Scott Simon, starting Dec. 7 . . . Julie King, director of community support at WAMU-FM (88.5), is retiring today after eight years . . . Marilyn Grace Cooley is joining WETA Monday from WBJC in Baltimore. Cooley will host the "Evening Program" from 6:30 to 8 p.m. and the "Night Program" from 10 p.m. to 1 a.m. . . . Kathi Kolodin has moved from sales at WAVA-FM (105.1) to promotions director . . . WWRC-AM (980) has added "Encore" with legendary deejay William B. Williams to its Sunday lineup at 5 p.m. . . . CBS recently honored WTOP for its longevity as a network affiliate. WTOP has clocked 55 years with CBS . . . Jeff Baker and David Burd of WCLY have started a music spotlight every Friday. Today it's music from the 1960s girl groups. The Cash Box

WGMS-AM/FM is trying to raise $75,000 today and tomorrow for the Washington Opera Guild. Tomorrow WGMS will do part of its programming live from White Flint Mall, including the Paul Hume show from 2 to 5 p.m. . . . In its seven-day fundraiser, WAMU raised $231,500, an increase of 15 percent over its spring total. The biggest draw was last Friday's "Morning Edition" program, which brought 500 pledges and $20,000 . . . By midweek WPFW-FM (89.3) had raised $70,000 and by the completion of its drive Sunday it hopes to reach $100,000. Its biggest draws so far have been last Saturday's edition of "The Bama Hour," which netted $5,800, and "Saturday Oldies," which netted $5,100.