MARVIN COHEN WAS A HAM FOR OVER 40 YEARS. HE DIED FROM COMPLICATIONS FROM KNEE SURGRY. MARVIN WAS MY FATHER AND MADE MANY FRIENDS THROUGH HAM RADIO AND DX. HE VISITED SOUTH AFRICA IN 1968 WITH MY MOTHER. HE ASSISTING MANY PEOPLE WITH THE HAM RADIO HOBBY. HE IS DEEPLY MISSED. I AM ALSO A HAM OPERATER KB9AMQ. I TOOK MY FATHERS CALL SIGN WHEN HE PASSED. I FIGURED IT WAS MY WAY OF KEEPING HIS MEMORY ALIVE.