Two high-technology firms in the D.C. area, BDM International Inc. and Systematics General Corp., are turning in improved profit statements so far this year.

BDM, based in McLean, earned $1 million (46 cents a share) on revenues of $27.1 million in the second quarter, compared with $727,000 (33 cents) on revenues of $21.9 million last year.

For the half, BDM had profits of $2 million (88 cents) on revenues of $51.4 million, compared with $1.4 million (63 cents) on revenues of $41.6 million the year before. According to BDM President Earle C. Williams, all the current figures are records for the periods.

BDM provides diversified professional and technical services, specializing in defense, defense communications, energy and transportation.

Systematics General of Sterling had profits of $65,724 (4.6 cents) compared with a loss of $257,000 in the second quarter. Sales rose to $3.2 million from $3 million last year.

For the half, the computer services and systems engineering firm had profits of $106,000 (74 cents) against losses of $332,000 last year.

Old Dominion REIT, based in Richmond, increased its profits to $91,894 (11 cents) from $24,220 (3 cents) in the second quarter. Revenues grew 22 percent to $1.2 million from $956,851. In the half, Old Dominion posted earnings of $269,608 (31 cents), down from the $561,085 (18 cents). Revenues in the period increased 30 percent from $1.9 million last year to $2.4 million.