LAS TWR CTLR VOICED CONCERN REGARDING POSSIBLE INTENTIONAL WRONG TWR FREQ ASSIGNMENTS BY L30 CTLRS; ALLEGING SAFETY CONCERNS.

Narrative

WHILE WORKING LCL CTL 1 AND LCL CTL 2 COMBINED AT LAS TWR; I RECEIVED NOTIFICATION FROM LAS VEGAS TRACON L30 THAT THE MEAD AND DAGGOT SECTORS ARE COMBINED. I PASSED THIS INFO ON TO OTHER PERSONNEL IN THE TWR (LAS) AND WAS TOLD THAT IT HAD ALREADY BEEN DONE. I THEN INQUIRED TO THE DAGGOT SECTOR ON WHY THEY RE-COORD THE SECTORS BEING COMBINED. THE REPLY WAS THAT AN ACFT HAD COME OVER ON THE WRONG DEP FREQ. THE NEXT ACFT THAT CHKED IN WITH THE TWR WAS ON THE WRONG FREQ. I THEN COORD WITH THE APPROPRIATE SECTOR TO INFORM THEM OF THE CORRECT FREQ. WITHIN 2 OR 3 MINS ANOTHER ACFT CHKED IN WITH THE TWR ON THE WRONG FREQ. THIS IS NOT THE FIRST TIME THAT THIS HAS HAPPENED IN LAS VEGAS. THE MGMNT AT LAS VEGAS TWR HAS BEEN INFORMED; BUT HAS FAILED TO FOLLOW UP ON THE OTHER INCIDENTS. IT IS MY BELIEF THAT LAS VEGAS TRACON (L30) IS INTENTIONALLY ISSUING THE INCORRECT TWR FREQ. THIS IS A SAFETY ISSUE THAT SHOULD BE INVESTIGATED AND ADDRESSED IMMEDIATELY. UNNECESSARY FREQ CHANGES DURING A CRITICAL PHASE OF FLT ARE DANGEROUS.