A PA28R PLT FLIES AN ACFT WITH A HISTORY OF RADIO PROBS AND IS CONFRONTED WITH A RETURN OF THESE SAME PROBS AGAIN. HIS NO COM CONDITION RESULTS IN A GAR FOR HIM AND ANOTHER ACFT IN THE TFC PATTERN.

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I FLEW AN AIRPLANE; AGAINST MY BETTER JUDGEMENT; THAT HAD RECURRING MAINT PROBS. ONE OF THE PROBS WAS/IS RADIOS THAT DON'T WORK AS THEY SHOULD WORK. THEY HAVE BEEN WRITTEN UP SEVERAL TIMES BY ME AND OTHERS BUT NO REAL FIX HAS/HAD OCCURRED. THE RADIOS WORKED OK ON THIS PARTICULAR FLT UNTIL MY LAST PATTERN FOR LNDG; THEN THEY QUIT. THERE WERE NO POPPED CIRCUIT BREAKERS BUT IT APPEARED THAT MAYBE ALL THE ELECTRIC ITEMS MIGHT BE OUT MOMENTARILY. THE RADIOS THEN RETURNED AND I GOT A LNDG CLRNC BUT QUIT PRIOR TO LNDG ON SHORT FINAL. I COULDN'T CONFIRM THE GEAR WAS DOWN (NO NOISE; BAD LIGHTING; ETC.) UNTIL TOO LATE IN THE LNDG SEQUENCE. THEREFORE; I WENT AROUND. THE RADIOS RETURNED MOMENTARILY AGAIN AND I GOT A SECOND CLRNC BEFORE THEY QUIT AGAIN. UNFORTUNATELY; I THINK THIS SECOND PATTERN WITH INTERMITTENT RADIOS CAUSED AN AIRPLANE TO HAVE TO GO AROUND ON FINAL WHILE TWR AND I WERE TRYING TO COMMUNICATE. TWR DIDN'T ISSUE ANY LIGHT SIGNALS AND I DIDN'T LEAVE THE PATTERN FOR A LESS CROWDED ARPT BUT THERE ARE SOME VERY REAL SAFETY OF FLT CONCERNS WITH THIS SIT. THERE ARE ALSO NO HUMAN PERFORMANCE CONSIDERATIONS THAT I KNOW OF TO DISCUSS.