PLT OF A C172 ON DOWNWIND IN TFC PATTERN HAS HEAD ON TFC AT SAME ALT. HE TURNS AS DOES THE PA28 PLT. CONTINUING THE APCH RPTR SIGHTS THE OTHER ACFT APCHING FROM THE R AND ABOVE. THE SECOND ACFT FINALLY TAKES ACTION AND TURNS AWAY; BUT LATER COMPLAINS THAT HE WAS CUT OFF.

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AS I ENTERED THE TFC PATTERN FROM A 45 DEG TO DOWNWIND; I OBSERVED APCHING TFC COMING AT ME AT ABOUT 3 MI SAME ALT. I DEVIATED R TO AVOID UNTIL I WAS SURE THERE WAS NO CONFLICT. OTHER ACFT APPEARED TO TURN TO HIS R AND FLEW OVER TOWN. I CONTINUED MY APCH TO THE ARPT RWY 30; ADVISING ON CTAF ON DOWNWIND; BASE; AND FINAL. WHILE ON FINAL; WE SAW THE OTHER ACFT APCHING US FROM OUR R. WE WATCHED THE ACFT CONSTANTLY; EXPECTING IT TO TURN UPWIND FOR AN APCH TO RWY 30. ABOUT THE TIME I DECIDED HE WASN'T GOING TO TURN; HE SAW US 'FINALLY' AND DEVIATED COURSE AS WE WERE ON FINAL AND BELOW HIM. HE CLAIMS I CUT HIM OFF ON FINAL. AS WE SAW IT HE WAS NOWHERE NEAR THE ARPT OR THE EXTENDED RWY CTRLINE AND WAS APCHING THE ARPT USING A R BASE APCH TO RWY 30. THE LCL TFC PATTERN IS L HAND. THE UNFORTUNATE PART IS THAT I CONTRIBUTED TO THE PROB BECAUSE MY RADIOS WERE NOT XMITTING; ALTHOUGH THEY WERE RECEIVING. I DID NOT KNOW THIS AT THE TIME; AND AM SURE HE HAD NO IDEA I WAS IN THE PATTERN AS THE DAYLIGHT WAS FADING AND HE COULD NOT HEAR MY CALLS. THERE WAS ALSO LCL FLOAT PLANE ACTIVITY TO ADD TO THE RADIO CONFUSION. AFTER LNDG AND CHKING THE RADIOS; I DISCOVERED I HAD INCORRECTLY CONNECTED MY HEADSETS TO THEM AND THEY DID WORK PROPERLY. HOWEVER I BELIEVE THE WHOLE CONFLICT COULD HAVE BEEN AVOIDED HAD THE OTHER PLT FLOWN THE LCL TFC PATTERN THE CORRECT WAY. AFTER A VERY HEATED ARGUMENT WITH A VERY ARROGANT DAKOTA PLT; I WENT AND FOUND MY LCL CFI WHO OBSERVED THE CONFLICT; TO FIND OUT IF I HAD BEEN WRONG. AFTER A DETAILED DESCRIPTION OF EVENT; WE CONCLUDED THAT EVEN THOUGH THE RADIOS WEREN'T WORKING; I STILL FLEW THE PROPER APCH; WAS LOWER AND HAD THE RIGHT OF WAY. HOWEVER; A CLOSE CALL MAKES NO ONE HAPPY; RIGHT OR WRONG AND I'M HAPPY IT ONLY RESULTED IN ELEVATED BLOOD PRESSURE AND A LONG TALK WITH MY CFI.