DATE 1960 OBSERVER(S) DRAKE OZMA SITE NRAO INSTR. SIZE (M) 26 SEARCH FREQ. (MHz) 1420 - 1420.4 FREQ. RES. (Hz) 100 OBJECTS 2 STARS FLUX LIMITS (W/m 2 ) 1 x 10 -22 TOTAL HOURS 200 REFERENCE 1 COMMENTS Single channel receiver.

DATE 1964 1965 OBSERVER(S) KARDASHEV & SHOLOMITSKII SITE CRIMEA DEEP SPACE STATION INSTR. SIZE (M) 16 (8 ANTENNAS) SEARCH FREQ. (MHz) 923 FREQ. RES. (Hz) 10 MHz OBJECTS 2 QUASARS FLUX LIMITS (W/m 2 ) 2 x 10 -20 TOTAL HOURS 80 REFERENCE 19, 42 COMMENTS Reported detection of CTA102 as possible Type III civilization.

DATE 1966 OBSERVER(S) KELLERMAN SITE CSIRO INSTR. SIZE (M) 64 SEARCH FREQ. (MHz) MANY BETWEEN 350 & 5000 FREQ. RES. (Hz) FULL BANDWIDTH FOR EACH FEED OBJECTS 1 GALAXY (1934-63) FLUX LIMITS (W/m 2 ) 1 X 10 -18 TOTAL HOURS REFERENCE 2 COMMENTS No notch of ETI origin was detected in galaxy 1934-63.

DATE 1968 - 1982 OBSERVER(S) TROITSKII SITE GORKY INSTR. SIZE (M) DIPOLE SEARCH FREQ. (MHz) 30 CM, 16 CM, 8 CM & 3 CM FREQ. RES. (Hz) OBJECTS ALL SKY SEARCH FLUX LIMITS (W/m 2 ) TOTAL HOURS CONTINUING REFERENCE 23 COMMENTS Search over all sky visible by single dipole.

DATE 1968 & 1969 OBSERVER(S) TROITSKII, STARODUBTSEV, GERSHTEJIN & RAKHLIN SITE ZIMENKIE, USSR INSTR. SIZE (M) 5 SEARCH FREQ. (MHz) 926 - 928 & 1421 - 1423 FREQ. RES. (Hz) 13 OBJECTS 11 STARS + M31 FLUX LIMITS (W/m 2 ) 2 x 10 -21** TOTAL HOURS 12 REFERENCE 3 COMMENTS 20 filters of width 100 KHz divided into 25 channels with F = 13 Hz spaced 4 KHz apart and stepped in frequency.

DATE 1969 - 1983 OBSERVER(S) TROITSKII, BONDAR, & STARODUBTSEV SITE GORKII, CRIMEA, MURMANSK AND PRIMORSKIJ REGIONS INSTR. SIZE (M) DIPOLES SEARCH FREQ. (MHz) 1863, 927 & 600 FREQ. RES. (Hz) OBJECTS ALL SKY SEARCH FOR SPORADIC PULSES FLUX LIMITS (W/m 2 ) 10 -22 W/m2/Hz TOTAL HOURS 1200 PER YEAR (ON AVERAGE) REFERENCE 4 COMMENTS Network of isotropic detectors; cross correlation from 2 or 4 sites over 8000 km.