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Optical positions of 68 radio stars observed with the photoelectric astrolabe Mark II of Beijing Astronomical Observatory in San Juan are presented. The Positions of the radio stars are for the epoch of observation and the equinox J2000.0 and a system close that of the system FK5. The mean precisions are ± 2.8 ms and ± in right ascensions and declinations, respectively. The magnitudes of stars are from 0.9 mag to 10.7 mag. The declinations are from -3° to -58°. The mean epoch is 1994.2.