FAN SONG

The maximum radar range of the E-band Fan Song A/B/F radar varies between 60-120 km depending upon target type, altitude and operating conditions. The G-band Fan Song D/E maximum range is extended to between 75-145 km under equivalent conditions.

As U-2 operations continued in the late 1950s, photography from these missions revealed that more and more Soviet Air Force and Air Defense units were receiving new combat and electronic equipment. For example, P-30 (probably the Fan Song series) radar systems that could detect aircraft at altitudes above 20 kilometers (about 66,000 feet) began to enter service with Air Defense units during this period. In addition, Soviet air regiments in 1959 received T-3 (probably SU-9 fishpot) high-altitude interceptor aircraft with a supersonic speed and an altitude ceiling also above 20 kilometers. And SAM units around that time started receiving the highly regarded S-75--almost certainly the SA-2 Guideline missile system, which had a 25-kilometer (approximately 82,000 feet) engagement altitude against targets flying at up to 1,500 kilometers (about 930 miles) per hour.

FAN SONG
	FAN SONG A/B	FAN SONG C/E	FAN SONG F
Function:	Fire Control & Tracking Can track six targets simultaneously
Range	60-120km (A/B versions)	70-145km (D/E/F versions)
Frequency	E/F bands (A/B versions)	G band (C/E versions)	E/F bands (F version)
Comments	600kw power Vert Ant BW 10 10x2deg Hort Ant BW 2x10deg Scan 15.5-17HZ	1.0mw power Vert Ant BW 7.5x1.5deg Hort Ant BW 11.5x7.5 Scan 15.5-17HZ PRF 828-1440 Search 1656-2880 Trk PW .4-1.2ms us 2-.9ms us	600kw power Vert Ant BW 10 10x2deg Hort Ant BW 2x10deg Scan 15.5-17HZ (guidance): PRF 44pps
Associated weapon system	SA-2 GUIDELINE SAM, SPOON REST target acquisition radar
Recognition	Trailer-mounted with tilting superstructure Two orthogonal antennas(lewis scanners) E version have 2 additional parabolic dishes Scanners exhibit 'flapping' motion in operation