At their first meeting of 1985, Loudoun County supervisors took less than 60 seconds this week to elect Leesburg supervisor Frank Raflo chairman for the next year.

Thanking his fellow board members for their unanimous vote in electing him chairman, Raflo said, "This is, I think, the first time in 100 years that anyone from Leesburg has had that opportunity." Raflo, a Democrat, has been the Leesburg district's representative on the board for 13 years.

The board then took slightly longer to elect Blue Ridge supervisor and outgoing chairman James F. Brownell vice chairman for 1985, over Sterling supervisor Andrew R. Bird III, the only other nominee for the vice chairmanship. Brownell and Bird are Republicans. Voting against Brownell were Bird, Catoctin supervisor Frank Lambert and Broad Run supervisor Steven Stockman.

During this week's meeting, Raflo said that in the coming year a "greater effort will be made" to be "up front" about the board's actions. One method of doing this, he said, will be the establishment of a 90-minute period, during the week following each regular board meeting, when residents can call him to discuss county business.

"There will be a specific time at which there will be a call-in number and I will be at that number and you won't get a secretary," Raflo said. "I don't know if I'll solve anything or settle any complaints . . . . The effort here will be to at least have the chairman on the end of the phone and tell him what you want to tell him."

Raflo said the hour and day for this has not been decided, but that once it has been decided, the time and telephone number will be advertised.

Also this week, a request for another hearing on a special exception application for Rag Time video arcade in the Sterling Park shopping mall was denied by the board. Voting against a rehearing were Bird, Stockman, Lambert and Dulles supervisor Ann Kavanagh, the same four who voted against the special exception when it was denied last month.

In other matters the board:

* Adopted rules of order that will, among other changes, set the board's regular public hearing on the second Monday of each month.

* Heard from County Administrator Philip A. Bolen that various sites are being investigated as possible locations for a county fire and rescue services training center, and that more information would be available at the board's next meeting.

* Unanimously adopted a resolution of appreciation honoring Nancy Cockerille, who retired in December after serving as Loudoun County extension agent for the last 25 years.