PVT INST RATED PLT OF A MOONEY MO20 FAILED TO HOLD SHORT OF 3 ACTIVE RWYS DURING TAXI OUT DUE TO A MISUNDERSTANDING FROM GND CTL INSTRUCTIONS.

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AFTER ENG START AND RECEIVING THE ATIS INFO FROM MY POS IN FRONT OF FBO; I CALLED GND CTL AND STATED I HAD THE ATIS AND WAS READY TO TAXI TO RWY 27; THE RWY IN USE. XMISSION FROM GND WAS SCRATCHY AND HARD TO UNDERSTAND; BUT I THOUGHT I HEARD DIRECTIONS FOR TAXI TO RWY 27. I DID NOT HEAR OR ACKNOWLEDGE ANY HOLD SHORT INSTRUCTIONS. I HEARD TXWY D TO TXWY B. I BEGAN TAXIING TO RWY 27; XING RWY 14/32 AND RWY 1/19. AT THIS POINT; I WAS CONTACTED BY GND CTL ASKING 'WHAT ARE YOU DOING? YOU JUST CROSSED 2 ACTIVE RWYS.' I ACKNOWLEDGED THAT I HAD INDEED DONE THAT; THAT I KNEW HOW IMPORTANT IT WAS; AND I TOLD GND WHAT I THOUGHT HAD BEEN MY INSTRUCTIONS. I WAS INFORMED THAT I WAS IN ERROR; THAT I HAD BEEN ISSUED HOLD SHORT INSTRUCTIONS. I WAS THEN TOLD TO CONTINUE ON TXWY B AND HOLD SHORT AT RWY 27 FOR RELEASE. AT THIS POINT; I WAS A LITTLE UNNERVED. I TOOK ADVANTAGE OF THE WAIT TO PERFORM A RUNUP AND REGAIN MY COMPOSURE. I HEARD A CALL WITH WHAT I THOUGHT WAS MY N-NUMBER ALLOWING ME TO CROSS RWY 27 TO CONTINUE MY TAXI TO THE APCH END OF THE RWY. (THERE WAS NO PARALLEL TXWY ON THE S SIDE FROM MY LOCATION.) AGAIN; GND CAME ON ASKING WHAT I WAS DOING; SAYING I HAD DONE IT AGAIN. THIS MADE NO SENSE TO ME AS I HAD HEARD (AT LEAST I THOUGHT I HAD HEARD) PERMISSION TO CROSS AND CONTINUE TO THE END OF RWY 27. WHAT GND THEN SAID WAS THAT I HAD BEEN TOLD TO 'HOLD FOR RELEASE' AND 'CONTACT TWR.' WHAT HE DIDN'T SAY WAS THAT HE WAS EXPECTING ME TO MAKE AN INTXN DEP FROM THE POINT WHERE I WAS HOLDING SHORT FOR ALL THAT TIME. SO; I MADE SEVERAL SERIOUS ERRORS. I BELIEVE GND CTL DID ALSO. THERE WERE NO KNOWN DIVERSIONS; GARS; OR CONFLICTS WITH OTHER AIRPLANES. I BELIEVE A NUMBER OF FACTORS CONTRIBUTED TO THIS SERIES OF EVENTS: FIRST; I WAS FATIGUED FROM THE WORK I HAD GONE TO WILMINGTON TO DO AND SHOULD HAVE RESTED; PERHAPS HAD A MEAL; BEFORE FLYING. SECOND; THE QUALITY OF RADIO XMISSION FROM GND CTL TO MY INITIAL LOCATION WAS POOR. FURTHER; THE CTLR WAS SPEAKING QUICKLY AND BRUSQUELY. THIRD; I ACKNOWLEDGED TAXI INSTRUCTIONS TO RWY 27 BUT DID NOT ACKNOWLEDGE THE REQUIREMENT TO HOLD SHORT AT RWY 14/32; NOR DID GND COME BACK TO ME AND CONFIRM THE NEED TO HOLD SHORT. (I WOULD HAVE BEEN A LITTLE SURPRISED TO HAVE BEEN ISSUED HOLD SHORT INSTRUCTIONS FOR A RWY THAT HAD BEEN NOTAMED AS 'CLOSED;' WHICH RWY 14/32 WAS.) THE CTLR DID NOT REACT UNTIL I HAD CROSSED RWY 1/19; AND THEN ISSUED FURTHER; INCOMPLETE INSTRUCTIONS; HAVING OMITTED ANY REF TO AN EXPECTED INTXN DEP. NEEDED: BETTER RADIOS FOR GND. HOLD SHORT INSTRUCTIONS SHOULD HAVE BEEN CLARIFIED BY BOTH PARTIES. I SHOULD HAVE DELAYED DEP UNTIL I WAS LESS FATIGUED. SINCE I WAS AT AN UNFAMILIAR ARPT I SHOULD HAVE CONFIRMED PERMISSION TO PROCEED WITH TAXI AS I ENCOUNTERED THE OTHER RWYS.