SMT HAS NMAC WITH SMA IN TFC PATTERN.

Narrative

I CALLED CORONADO ARPT FOR AN ARPT ADVISORY; I STATED I WAS 10 MI N. THEY RESPONDED 'WINDS WERE LIGHT AND VARIABLE -- LNDG RWY 35; L TFC.' WITHIN 30 SECONDS I HEARD A CESSNA CALL XWIND FOR RWY 35. HE THEN CALLED DOWNWIND FOR RWY 35 ABOUT 30 SECONDS LATER. AT THIS TIME I WAS ABOUT 8 MI N. A FEW MINS LATER I CALLED ON 122.8 THAT I WAS 2 MI NW ENTERING A L DOWNWIND FOR RWY 35. I WAS LOOKING FOR CESSNA TO BE WELL ON THE DOWNWIND OR ON BASE BY THIS TIME. AS I WAS APCHING THE N END OF RWY 35 ON DOWNWIND I SAW HIM UNDER ME AND TO MY L. AT THIS TIME HE CALLED ME AND SAID THAT I WENT RIGHT OVER HIM. I CHKED MY ALT AND WAS AT 6600 FT. I WAS TURNING BASE; HE CALLED ME AND ASKED WHY I DIDN'T RPT POS. I TOLD HIM THAT I HAD RPTED 2 MI NW AFTER HE HAD CALLED DOWNWIND. AS I WAS ON FINAL HE CALLED RPTING HE WAS LEAVING THE PATTERN TO THE W. THIS ARPT HAS A LOT OF STUDENT TFC AND I AM QUITE AWARE OF THIS AS I FLY INTO THIS ARPT ONCE A WK FOR THE LAST 9 YRS. I HAVE FOUND THAT STUDENT/INSTRUCTORS WILL TURN THE VOLUME DOWN UNTIL THEY NEED TO TALK ON THE RADIO. THIS IS A VERY UNSAFE CONDITION AND NOT GOOD PRACTICE TO TEACH STUDENTS IF THIS WAS THE CASE.