PLT TAKES OFF ON CLOSED RWY AT LGB BEFORE TWR IS OPEN.

Narrative

IN SUM: RPTR RECEIVED AN IFR CLRNC AFTER A NORMAL BRIEFING WITH A VOID TIME BEFORE THE LGB TWR OPENED FOR THE DAY. PREPARATIONS WERE MADE FOR AN ON-TIME DEP; BUT THERE WAS A QUESTION AS TO WHETHER OR NOT THE RADIOS WERE WORKING CORRECTLY. IT WAS CLOSE TO TWR OPENING TIME AND RPTR MADE SEVERAL NONSTANDARD CALLS; WHICH WERE NOT ANSWERED. HE THEN PLANNED TO TAKE OFF ON TIME; MAKE A CALL TO DEP CTL; AND IF NOT SUCCESSFUL; RETURN AND LAND VFR. TKOF WAS SUCCESSFUL; CONTACT MADE AND FLT PROCEEDED NORMALLY. LATER A REQUEST WAS MADE TO CONTACT LGB TWR TO EXPLAIN TKOF ON A CLOSED RWY. NO NOTICE OF THE RWY CLOSURE WAS FOUND IN THE DUATS BRIEFING OR WITH THE FSS BRIEFER. PROBS OF CONCERN TO THE RPTR ARE: 1) THE LACK OF NOTICE FROM ANY SOURCE ABOUT THE RWY CLOSURE. 2) HIS LACK OF IMPROPER RADIO XMISSIONS WHEN THE TWR WAS CLOSED AND HE SHOULD HAVE BEEN USING CTAF CALLS. TWR SAID THEY WOULD HAVE ANSWERED A CTAF CALL INDICATING A TKOF ON THE CLOSED RWY. 3) THE TENDENCY FOR PLTS TO RUSH WHEN TRYING TO MAKE CLRNC VOID TIMES.