CLOSE PROX ACR-SMT ON TRAINING FLT AND GA-SMA.

Narrative

WHILE GIVING FLT TRNING AT VISALIA; CA; AND ON AN ILS APCH TO RWY 30 AT THAT ARPT; OUR ACFT WAS ON THE LOC-G/S; APPROX 300' AGL; WHEN A RED SMA WAS FIRST NOTICED HIGHER THAN OUR ACFT AND TURNING FROM BASE LEG TO FINAL APCH AND DSNDING. I IMMEDIATELY TOOK THE FLT CTLS AND EXECUTED A RIGHT TURN TO AVOID THE ABOVE MENTIONED ACFT. IT APPEARED THAT THE SMA OVERSHOT THE FINAL APCH COURSE TO ME AND ONE OF THE STUDENTS THAT WAS IN THE BACK OF OUR ACFT; WHICH MADE IT EXTREMELY DIFFICULT TO AVOID HITTING THAT ACFT. ALTHOUGH OUR ACFT WAS RECEIVING TFC ADVISORIES FROM FRESNO APCH CTL FROM TIME TO TIME; THERE WAS NO RADAR COVERAGE DUE TO OUR ALT. I RETURNED AND LANDED OUR ACFT VISALIA ARPT TO FIND THE SMA AND PLT. I TALKED WITH THE PLT AND HE STATED HE DID NOT SEE ME (OUR ACFT). I STATED TO HIM THAT WE ANNOUNCED OUR POS/INTENTIONS OVER THE OM INBND AND 3 MI FINAL. HE STATED HE DID NOT HEAR US AT ALL. THEN; STATED HE WAS TRANSMITTING/RECEIVING ON FREQ 122.8. I TOLD HIM VISALIA WAS ON 123.0. HE THEN STATED THE WAC CHART HE WAS USING SAID 122.8.