HDG TRACK DEV NOTED BY ATC WHEN AN MD80 FO TURNS TO 102 DEGS AFTER PASSING DVC; UNABLE TO RECEIVE THE NEXT VOR NAV POINT; THE VORTAC AT LVS.

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OUR CLRNC FROM SLC TO IAH WAS 'FFU6 FFU HVE..DVC..LVS..TXO..ABI..LLO..CLL CUGAR1 IAH.' OVER DVC VORTAC WE WERE UNABLE TO RECEIVE LVS VORTAC. I TURNED TO THE HDG SHOWN ON OUR FLT PLAN. WHEN FREQ CONGESTION PERMITTED I CALLED ZDC (125.67) TO INFORM HIM OF OUR NOT RECEIVING LVS AND REQUESTED A HDG. THE CTLR ASKED OUR PRESENT HDG WHICH I REPLIED 'WE JUST TURNED TO 102 DEGS.' HE ASKED WHY WE TURNED AND I INFORMED HIM THAT OUR CLRNC WAS DIRECT LVS AND SINCE WE WERE NOT RECEIVING IT I TURNED TO THE SUGGESTED HDG IN OUR FLT PLAN. AFTER A DELAY; HE GAVE US A TURN TO 115 DEGS FOR LVS AND A PHONE NUMBER TO CALL. THE CAPT INQUIRED AS TO WHY THE PHONE NUMBER. THE CTLR BEGAN TO LECTURE US ON NAV REQUIREMENTS AND THAT WE SHOULD HAVE BEEN NAVING OFF OF DVC FOR UP TO 230 NM. WE INFORMED HIM THAT THERE WAS NO AIRWAY OR DIRECT RTE ON OUR CHARTS AND THE CAPT GAVE THE CTLR DISPATCH'S NUMBER AND SUGGESTED THAT HE CALL THEM AND WORK OUT ANY FLT PLAN PROBS FOR FUTURE FLTS. THE CTLR REFUSED TO GIVE HIS INITIALS TO US WHEN ASKED AND STATED THAT 'HIS SUPVR WAS WELL AWARE OF THE SIT.' THE CAPT THEN CALLED DISPATCH ON THE FLT DECK PHONE AND INFORMED THEM OF THE SIT.