ACR HAS CLOSE PROX WITH ANOTHER ACFT WHILE DEPARTING UNCTLED ARPT.

Narrative

FO XMITTED IN THE BLIND THAT WE WERE TAKING THE RWY. THERE ARE NO TAXIWAYS AT THIS ARPT. WE BACK TAXIED DOWN RWY 28 AND WENT INTO POS ON RWY 10. WE THEN HEARD AN AIRPLANE RPT 12 MI OUT FOR RWY 28. 30-40 SECONDS LATER; AFTER COMPLETING OUR TKOF CHKLIST; WE MADE ANOTHER XMISSION THAT WE WERE BEGINNING OUR TKOF ROLL ON RWY 10. AT 300 FT AGL WE INITIATED A TURN TO THE R IN ACCORDANCE WITH COMPANY PROCS. AT APPROX 800-1000 FT ON XWIND LEG I SAW A SMALL AIRPLANE BEGIN A TURN TO THE L; AWAY FROM US. UNCTLED ARPTS ARE INHERENTLY A POTENTIAL DANGER BY VIRTUE OF THE FACT THEY ARE NOT CTLED. SPECIAL VIGILANCE SHOULD BE PRACTICED. CONSTANT UPDATE OF POS AND INTENTIONS VIA BLIND XMISSION AND EVEN DIRECT COMS WITH OTHER ACFT SHOULD BE OBSERVED. SUPPLEMENTAL INFO FROM ACN 200761: CLBING THROUGH APPROX 7500 FT (1000 FT AGL) AND HDG APPROX 200 DEGS; I SAW A TURBOPROP ACFT ABOVE AND OUTSIDE OUR TURN IN A TURN AWAY FROM OUR POS. THE 2 ACFT PASSED WITH 1000 FT VERT AND APPROX 1 MI LATERAL SEPARATION. IT APPEARS THAT THE OTHER AIRPLANE WAS ENTERING DOWNWIND FOR RWY 10. I CHKED ON TKOF TO CLR THE AREA OF THE AIRPLANE CALLING STRAIGHT-IN FOR RWY 28.