ACR LTT DISTR FINDING PROPER TWR FREQ AFTER GIVEN WRONG FREQ BY APCH CTLR FAILS TO COMPLETE LNDG CHECKLIST.

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ALL WAS WELL FOR US UNTIL THE LAST VECTOR ONTO THE FINAL APCH COURSE. THE TURN WAS ISSUED A LITTLE LATE AND TIGHT; PLUS THE CTLR HAD LEFT US AT 3000' MSL APPROX 2 MI FROM SUNNE; THE FAF AT SJC. 1900' IS THE INTERMEDIATE ALT APCHING SUNNE. MEANWHILE THE PF WAS APCHING 2 DOTS HIGH ON THE G/S; AND WAS 1/2 A DOT OFF COURSE. I MENTIONED THIS TO THE PF; AND NECESSARY STEPS WERE TAKEN TO CORRECT THE PROB. THE BEFORE LNDG CHK WAS CALLED FOR. I SELECTED THE GEAR TO THE DOWN POS; AND TORQUES WERE BEING REDUCED TO THE FINAL APCH SETTING WHEN THE CTLR TOLD US TO CONTACT THE TWR ON 120.50. I ACKNOWLEDGED BY REPEATING BACK 120.50; PAUSED FOR A MOMENT; AND THEN CHANNELIZED AND SPOKE TO WHOM I THOUGHT WAS SJC TWR. I RECEIVED NO RESPONSE. I TRIED AGAIN BUT TO NO AVAIL. I LOOKED AT MY APCH PLATE AND FOUND THE PROPER FREQ; QUICKLY CHANGED TO IT; AND RPTED INBND ON THE ILS. THE TWR ACKNOWLEDGED AND CLRED US TO LAND. EVERYTHING WAS FINE UNTIL I STARTED TO COMPLETE THE AFTER LNDG CHK AND NOTICED THAT A CRITICAL ITEM (AUTOFEATHER ARM) HAD NOT BEEN ACCOMPLISHED ON THE BEFORE LNDG CHK. AFTER A REVIEW OF THE TAPES WITH BAY APCH IT WAS INDEED THE CTLR'S FAULT ON THE FREQ HDOF. HE ISSUED THE WRONG ONE; BUT MAYBE TO A LARGER DEGREE; ME THE PNF LET A SIMPLE HDOF DISTRACT ME. THE DISTR ALLOWED ME TO INITIATE; BUT NOT COMPLETE A CRITICAL CHKLIST FOR LNDG.