T-34 PLT HAD A RWY INCURSION AT FLD. A TEMP TWR WAS IN USE AND NOTAMS WERE PUBLISHED FOR FREQS.

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ENRTE TO OSH ON WARBIRD ARR HAD TO STOP SHORT AT FLD DUE TO SEVERE WX. ATIS AT OSH SUGGESTED ALTERNATE ARPTS. ARRIVED AT FLD AT XA30 LCL. HAD TO WAIT UNTIL AFTER XF00 LCL FOR AIRSHOW TO FINISH AT OSH TO RESUME. WHEN I ARRIVED AT THE AIRPLANE 2 SKY-RAIDERS WERE TAXIING OUT LED BY A GENTLEMAN IN AN ORANGE HAT AND AN ORANGE VEST (LOOKED LIKE PREVIOUS FAA GND CREWS AT OSH). I TOLD HIM I WOULD BE FIRING UP THE T34 TO GO TO OSH. HE SAID FOLLOW THE SKY-RAIDERS. IT TOOK ME A LITTLE LONGER TO FIRE UP AND GET GOING. HE WALKED ME OUT TO THE TXWY MUCH LIKE THE CREWS AT OSH WHERE YOU MONITOR THE CTL FREQ AND KEEP QUIET. WHILE I WAS TAXIING DOWN BESIDE RWY 18/36 (RWY THE SKY-RAIDERS JUST DEPARTED); I THOUGHT I SHOULD ANNOUNCE (IT WAS VERY LIGHT ACTIVITY AT FLD; NO OTHER ACFT ON THE TXWYS OR RWY). I XMITTED ON 120.4; THE CTL FREQ WHEN I ARRIVED AND THEY TOLD ME TO XMIT ON ANOTHER FREQ. WHEN I XMITTED ON THIS FREQ THE CTLR TOLD ME I JUST TAXIED THROUGH THE APCH END OF AN ACTIVE RWY 27. I WAS TOLD TO CONTINUE TO TAXI TO RWY 18 FOR DEP. I TAXIED AND TOOK OFF FOR THE WARBIRD ARR TO OSH. SHOULD HAVE STUDIED THE FLD NOTAM CLOSER.