AN MK4 PLT VIOLATED THE DC ADIZ AS WELL AS THE FAR REGARDING OXYGEN REQUIREMENTS.

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RETURN RTE FROM AN EXPERIMENTAL FLY-IN AT ROUGH RIVER; KY (2I3) TO TOMS RIVER; NJ; (MJX) WAS CHANGED DUE TO WX IN W VIRGINIA. FLT RESULTED IN PENETRATING THE WASHINGTON ADIZ. CALLED WX BRIEFER ON CELL PHONE FROM ROUGH RIVER AND HALFWAY THROUGH THE CELL PHONE DIED. I CALLED BACK ON A LAND LINE AND GOT ANOTHER BRIEFER AND TRIED TO CONTINUE WHERE WE LEFT OFF. DUE TO THE WX IN W VIRGINIA; THE FLT WOULD TAKE ME S INTO TENNESSEE; AROUND THE WX; AND THEN NE. I DON'T RECALL RECEIVING A NOTAM ON THE WASHINGTON ADIZ. FLT FROM ROUGH RIVER (2I3) TO SHENANDOAH VALLEY REGIONAL (SHD) WENT WITHOUT INCIDENT. AFTER A BATHROOM BREAK; I DEPARTED SHD TO THE NE AND CLBED TO 15000 FT TO FLY OVER WX AND MAINTAIN VFR. AFTER FLYING AT 15000 FT FOR ABOUT 10-15 MINS I DSNDED AS WX CLRED. I APCHED AND STAYED ABOVE THE WASHINGTON CLASS B AIRSPACE WITH A NE HEADING. I WASN'T THINKING ABOUT A WASHINGTON DC ADIZ UNTIL CHKED UPON BY WHAT APPEARED TO BE F16'S. TO DISPLAY NON-HOSTILE INTENTIONS; I MAINTAINED STRAIGHT AND LEVEL FLT. I TUNED TO 121.5 AND LISTENED FOR ANY TYPE OF DIRECTIONS. I WAS HEADING OUT OF THE CLASS B AIRSPACE AND THE INTERROGATING ACFT DEPARTED. I WAS WONDERING TO MYSELF WHY I DIDN'T JUST FLY AROUND THE AIRSPACE? COULD THE SHORT FLT AT 15000 FT BE ENOUGH TO AFFECT JUDGEMENT? IF A CALL TO A WX BRIEFER IS INTERRUPTED; THEN START FROM THE BEGINNING TO ENSURE NOTHING IS MISSED. I'M THINKING IF THE WASHINGTON ADIZ WAS MENTIONED; THEN THE AIRSPACE INTRUSION WOULD NOT HAVE OCCURRED.