PART TIME ATCT SET UP IN TEMPORARY FLT RESTR AREA AT 49J. NOTAM INFO NOT GIVEN TO PLT PRIOR TO DEP. UNAUTH RWY ENTRY. INFO DISSEMINATION PROC. NOTE: THE AFD DOES NOT LIST THE 'DIRECT' PHONE NUMBER FOR AND FSS.

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THE EVENING BEFORE DEP I REQUESTED AND RECEIVED A BRIEFING FOR AN IFR FLT FROM 49J (HILTON HEAD) TO 2I4 (BOLTON FIELD COLUMBUS; OH). I RECEIVED AN UPDATED WINDS ALOFT RPT FROM FSS THE MORNING OF THE FLT. APPROX 1/2 HR BEFORE THE FLT I FILED AN IFR FLT PLAN WITH FSS. AT NO TIME DURING ANY OF THE 3 PHONE CONVERSATIONS WITH FSS WAS I ADVISED THAT THE DEP ARPT WHICH IS AN UNCTLED ARPT HAD A TEMPORARY TWR FOR THE WKEND DUE TO A SPECIAL EVENT. THERE WAS NO NOTICE OF THE TEMPORARY TWR ON AWOS; IN MY APCH CHARTS OR CHART NOTAMS. THERE WAS NO SIGNAGE BEFORE THE TXWY INDICATING A TEMPORARY TWR. I LISTENED TO AWOS AND TAXIED TO THE ACTING RWY. I ATTEMPTED TO PICK UP MY IFR CLRNC FROM CLRNC DELIVERY (SAVANNAH) BUT RECEIVED NO RESPONSE. BECAUSE THE WX WAS VFR I DECIDED TO DEPART VFR AND PICK UP MY IFR CLRNC AFTER DEP. I SWITCHED TO THE UNICOM FREQ; ADVISED TFC OF MY DEP ON RWY 21 AND MY INTENTION TO DEPART NBOUND. THERE WAS NO RESPONSE ON UNICOM. AS I TOOK THE ACTIVE RWY I MONITORED A COMMUTER ON THE TXWY 'REQUESTING FREQS' ON UNICOM. A RESPONSE INDICATED A GND AND TWR FREQ. I IMMEDIATELY ABORTED THE TKOF AND CONFIRMED ON UNICOM THAT THERE WAS A TEMPORARY TWR. ONCE THE RESPONSE WAS IN THE AFFIRMATIVE; I CONTACTED THE TWR AS I PULLED OFF THE RWY. TWR ADVISED TO PICK UP MY IFR FROM GND CTL. I DID SO; TAXIED BACK TO THE ACTIVE; CALLED TWR AND WAS CLRED FOR TKOF. I SUGGEST THAT FSS; CHART SVCS AND CLR; CONSPICUOUS ARPT SIGNAGE ADVISE PLTS WHEN AN UNCTLED ARPT IS TEMPORARILY A CONTROLLED ARPT. A LARGE SIGN BEFORE THE TXWY WITH THE NOTICE AND FREQS WOULD HAVE PREVENTED THIS!