When Washingtonians reach for their radios, they want either urban contemporary music, or easy-listening music, or news, information and personality programming -- in that order. At least that's what the spring Arbitron ratings survey, conducted from April 2 to June 24, indicates. NBC's urban contemporary WKYS-FM (93.9) maintained its strong showing among listeners 12 years and older, this time leading the way with a 7.2 percent share of the listening audience. That is down from winter's 7.4 share but up from the No. 2 ranking. Winter's leader, easy-listening WGAY-FM (99.5) dropped to the No. 2 spot, with a 6.8 share compared to winter's 7.6. WMAL-AM (630) stayed steady with a 6.0 rating but moved up the ladder from winter's No. 4 to the No. 3 spot this time.

Among the biggest shakers and movers was rocker WWDC-FM (101.1), jumping to fourth with a 5.9 share, up from winter's 4.7. Urban hit WDJY-FM (100.3) continued its steady climb, up to 5.1 from 4.5. Classic rock-formatted WCXR-FM (105.9) also improved, to 3.7 from 3.4. Other gainers were urban-oriented WPGC-AM/FM (1580/95.5), to 2.1 from 1.5, and oldies WXTR-FM (104.1), 2.3 from 1.8.

Ratings for public radio stations are expected to be released later this week and are likely to affect the overall results. Here's a look at the spring 1987 Arbitron ratings of listeners 12 years and older: Spring 1987 Winter '87 1. WKYS-FM (93.9) 7.2 7.4 2. WGAY-FM (99.5) 6.8 7.6 3. WMAL-AM (630) 6.0 6.0 4. WWDC-FM (101.1) 5.9 4.7 5. WMZQ-FM (98.7) 5.6 6.8 6. WAVA-FM (105.1) 5.5 5.3 7. WHUR-FM (96.3) 5.3 5.9 8. WDJY-FM (100.3) 5.1 4.5 9. WRQX-FM (107.3) 4.6 3.8 10. WTOP-AM (1500) 4.1 4.5 11. WCXR-FM (105.9) 3.7 3.4 12. WLTT-FM (94.7) 3.2 3.2 13. WASH-FM (97.1) 3.1 3.0 14. WGMS-AM/FM (570/103.5) 2.5 3.6 15. WBMW-FM (106.7) 2.4 3.4 16. WWRC-AM (980) (tie) 2.3 2.4 16. WXTR-FM (104.1) (tie) 2.3 1.8 18. WPGC-AM/FM (1580/95.5) 2.1 1.5 19. WHFS-FM (99.1) 1.9 0.8 20. WYCB-AM (1340) 1.7 1.5 Country Consolidation; Contract

Effective Thursday, the Federal Communications Commission relaxed simulcast rules to allow stations with both AM and FM outlets to simulcast more than 50 percent of their airtime. Viacom International immediately pulled the plug on its traditional country station, WMZQ-AM (1390), and began simulcasting 100 percent with contemporary country WMZQ-FM (98.7).

"This is a fantastic move for the broadcast industry," said Paul Wilensky, general manager for the stations. "To run a 5,000-watt AM station in the nation's capital on a separate format is a great expense. We'll save a lot of money {at least $250,000 annually} in different ways. It's nice to have everything under one roof."

Katy Daley, program director for the AM side, moves into the 2 to 5 a.m. deejay slot. Jeanne Jackson, who joined WMZQ-FM as a receptionist four years ago and was promoted to afternoon drive disc jockey last summer when the AM side was in a pinch for air staff, was let go. Saturday morning host Gary Henderson is also out; he's a fulltime engineer with National Public Radio.

Meanwhile, Wilensky has signed the station's popular morning team Jim London and Mary Ball to a two-year contract worth what Wilensky referred to as "big bucks." He refused to be specific, other than to say two years is the longest commitment the station has ever made to any of its employes, except for his own contract. Also signed to one-year agreements last week were news and business reporter Dennis Crowley, afternoon drive host Keith MacDonald and midday man Bill Worthington.

London and Ball continue to rack up high marks in the Arbitron ratings, especially in their target audience of 25- to 54 year olds. The spring book has them second in that category, with a 7.0 percent share compared to WKYS' Donnie Simpson with 7.9.

Contra Appeal When three stations in the same market carry essentially the same programming, it would seem that there wouldn't be enough listeners to go around. But when the programming is the Iran-contra hearings, that's not so, according to top brass at all-news WTOP-AM (1500), WMAL-AM (630) and Pacifica's WPFW-FM (89.3).

"We've been carrying them since day one -- since the very beginning and we've received a very good response, quite a few letters and phone calls thanking us for carrying them," says WTOP general manager Michael Douglass. Douglass says his sales department has not tried to sell advertising pegged to the hearings but says, "I do think the advertisers whose spots are during the hearings are going to benefit greatly."

"Most of the listener response has been positive," says WMAL operations manager Jim Gallant. "People's interest in the hearings certainly peaked with Ollie North. They seemed to prefer to listen to the hearings to draw their own conclusions instead of getting their information filtered through newspapers." ABC-owned WMAL also did not sell spots tied to the hearings.

At WPFW, where gavel-to-gavel Pacifica coverage has been followed up with taped speeches by former CIA agent John Stockwell and others, the response has been in the form of financial contributions to the station.

"A lot of people have been calling us and making pledges," says program director Drepenba Manzira. "We've been getting an overwhelming response from listeners. With Oliver North's testimony and John Poindexter's, it really picked up."

For the Record The Museum of American History thought WAVA-FM's (105.1) "Ollie Kit" was so nifty, the folks at the Smithsonian have requested one for their archives. The "kit," which includes a $10 traveler's check, a $3 gift certificate to Parklane Hosiery, a coupon for an "Ollie Burger," a security system (a padlock and key) and a manual shredder (scissors), will be kept for a future display.

"We thought the "Ollie Kit" was such a hoot, we couldn't pass it up," said Edith Mayo, curator for the political history division responsible for collecting pop/political material.

Get 'Em While They're Hot Talk may be cheap but broadcasting it isn't. Last week's sale of three major local radio properties -- WCXR-FM (105.9) and sister station WCPT-AM (730) for $22.75 million; WASH-FM (97.1) for $29.25 million; and the 11-station First Media chain that includes WPGC-AM/FM (1580/95.5) for an estimated $180 million -- were just part of $382,458,918 in radio station transactions across the nation last week. According to Radio & Records, the trade bible, transactions for the year to date total $1,604,237,648.