PRC CTLR DESCRIBED CONFLICT WITH DEP AND PATTERN TFC CITING EQUIP TRANSITIONING ISSUES AS CONTRIBUTORY.

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WE ARE TRANSITIONING TO STARS FROM SATDS. AT THE LCL CTL #1 POS IT IS SATD AND AT THE LCL CTL #2 POS STARS. OUR LCL FLT SCHOOLS HAVE ASSIGNED CODES WHICH TAG UP ON THE STARS BUT NOT THE SATDS WHICH IS VERY CONFUSING. 2 LCL ACFT (ARTS IIIE) CALLED IN FROM THE SAME AREA AT THE SAME TIME. I WAS AT LCL #1 USING SATDS SYS AND NEITHER ACFT TAGGED UP. I GAVE TFC ABOUT EACH OTHER AND ENTRY INSTRUCTIONS. ONE ACFT (ACFT Z) APPEARED TO HAVE AN INSTRUCTOR ON BOARD; THE OTHER ACFT (ACFT X) APPEARED TO BE A SOLO STUDENT. BOTH ACFT WERE GIVEN L TFC TO RWY 30. ONE OF THE ACFT WHICH TURNED OUT TO BE ACFT X MANEUVERED INCORRECTLY ENDING UP OPPOSITE DIRECTION TO THE UPWIND OF RWY 30. I ISSUED TFC AND AMENDED HIS ENTRY INSTRUCTIONS. WHEN HE DIDN'T APPEAR TO CORRECT; I GAVE HIM ADDITIONAL INSTRUCTIONS TO RPT INBOUND FROM CHINO VALLEY FOR A R 45 DEG ENTRY TO RWY 30. I ALSO GAVE HIM MORE TFC ABOUT DEPARTING ACFT. I DEPART ACFT Y TO THE N AND GAVE HIM TFC ABOUT THE INBOUND ACR. AS I WAS GETTING RELIEVED AND GIVING THE RELIEF BRIEFING; I ISSUED MORE TFC TO ACFT Y AND ACFT X. ACFT Y RPTED TFC IN SIGHT STATING HE JUST FLEW BY ME. ACFT X RPTED TFC IN SIGHT THAT THE ACFT FLEW UNDER HIM. THE RELIEVING CTLR THEN SAID 'WELCOME TO THE VFR ENVIRONMENT' OR SOMETHING TO THAT EFFECT. AT THAT TIME I WAS THE ONLY CPC ON THE SHIFT.