PLT OF A SMA SEL ERRONEOUSLY ENTERED RESTR AIRSPACE.

Narrative

UPON ARR AT ROCKPORT; TX; ARPT; I WAS CALLED TO THE TELEPHONE TO TALK TO PERSON(S) UNKNOWN. SAID THE RADAR TRACKED ME FROM A TETHERED BALLOON SITE NEAR TOWN OF PALACIOS; TX. IDENTIFIED ACFT WHICH CAME CLOSE TO AN UNLIGHTED CABLE TO 15000 FT; AS A TWIN ACFT. I WAS NEAR THE VICINITY ON V-70 FROM GALVESTON; TX; ARPT TO THE PSX (VOR) AT OR NEAR TIME FRAME OF INCIDENT. DRIFTED S OF AIRWAY SOME SHORT DISTANCE. LORAN NAV. (NORTHSTAR M-2) WAS DROPPING ON/OFF THE LINE. REALIZING SAME; I TURNED NW DIRECT TO PSX (VOR) TO CHK ACCURACY OF NAV EQUIP. AS I DID COMPLETE THIS MANEUVER; THE GND OBSERVER NOTED A TWIN ENG ACFT GOING IN THE SAME DIRECTION -- ALLEGEDLY VIOLATING A RESTR AREA (R-6320) -- COMING CLOSE TO THE EXTENDED CABLE. AFTER CHKING MY NAV EQUIP AT PSX (VOR) I PROCEEDED OUTBOUND DIRECT TO RKP ON (V-20-70) TO MY DEST. THIS SEEMS TO BE A CASE OF MISIDENT OF AN INTRUDER OF A RESTR AREA. VERY SERIOUS MATTER. IF I WERE THE INTRUDER - - IT WAS CERTAINLY NOT DONE INTENTIONALLY OR WITH PREMEDITATION. I AM SORRY FOR THE INCIDENT -- HOWEVER; IF I AM THE CULPRIT WHO DID VIOLATE THAT AIRSPACE; I PLEAD INNOCENCE DUE TO MY INABILITY TO SEE AN UNLIGHTED CABLE ALLOWED TO BE PLACED TOO NEAR AN AIRWAY; PROBABLY LESS THAN 1 INCH IN DIAMETER. I THINK I WAS TOO FAR REMOVED FROM (R-6320) TO HAVE COMMITTED THIS INTRUSION; BUT IF I DID STRAY OFF COURSE THAT MUCH; IT WAS NOT PREMEDITATED.