ACR FLT CREW HAS DIFFICULTY COMMUNICATING WITH GND CTLR DUE TO ANOTHER ACFT BLOCKING THE FREQ AT SBA.

Narrative

WE WERE LEAVING THE RAMP (ATC NON MOVEMENT AREA) AT SBA; HAD BEEN PROPERLY MARSHALLED OUT BY OUR GND CREW AND HAD BEGUN A 180 DEG TURN TO HEAD FOR THE TXWY. WE WERE ABOUT READY TO CONTACT GND; WHEN ACR Y CALLED FOR TAXI. THEY HAD NOT YET BEEN MARSHALLED OUT BY THEIR RAMPERS; BUT GND CLRED THEM FOR TAXI. WE TRIED ONCE AGAIN TO CONTACT GND; BUT WERE AGAIN BLOCKED BY ANOTHER ACFT. AT THIS POINT WE STOPPED SO AS NOT TO PROCEED TO THE TXWY WITHOUT A CLRNC. WE ATTEMPTED A THIRD TIME TO CONTACT GND CTL; WHEN ACR Y JUMPED ON THE RADIO AGAIN; EXTREMELY INDIGNANT; CLAIMING THAT WE HAD 'CUT THEM OFF;' DESPITE THE FACT WE HAD BEGUN MOVING LONG BEFORE HE HAD GOTTEN A CLRNC. GND THEN CLRED US TO TAXI; AND INSTRUCTED ACR Y TO FOLLOW US. ACR Y GOT EXTREMELY HOSTILE; AND ASKED ATC TO 'PULL THE TAPES.' MY FO AND I LOOKED AT EACH OTHER; PUZZLED; AND I GOT ON THE RADIO TO VERIFY THAT THE RAMP WAS; IN FACT; A NON MOVEMENT AREA. THE CTLR ASSURED US THAT IT WAS. WE TAXIED TO THE RWY; AND THE CTLR SAID 'ACR X; AFTER TKOF FLY...' (THIS PART OF THE XMISSION WAS BLOCKED; POSSIBLY DELIBERATELY); '...RWY 25 CLRED; FOR TKOF.' FO THOUGHT HE HEARD '...HDG 140...' DURING THE BLOCKED PORTION; SO HE READ THAT BACK; TWR AFFIRMED AND WE WERE CLRED FOR TKOF. ALTHOUGH I CANNOT PROVE THAT THE XMISSION WAS DELIBERATELY BLOCKED; THERE WAS NOT THE USUAL BACKGND NOISE USUALLY ASSOCIATED WITH AN ACCIDENTAL MIKE KEY; IT WAS EXTREMELY QUIET; AS THE COCKPIT OF A PARKED JET WOULD BE. ALSO; THE XMISSION HAD NO STATIC; SO IT WAS EXTREMELY CLOSE BY. THIS COULD HAVE CREATED AN EXTREMELY HAZARDOUS CONDITION; AS AFTER WE TURNED AFTER TKOF; THERE WAS TFC IMMEDIATELY OFF TO OUR L. ALTHOUGH WE HAD COMPLIED WITH THE ATC INSTRUCTIONS AS THEY WERE ISSUED; HAD WE MISUNDERSTOOD THE CLRNC; IT COULD HAVE RESULTED IN A MIDAIR COLLISION.