OVERVIEW: The RSP-10 LONG TALK and RSP-7 TWO SPOT are a Ground Control Approach (GCA) radar operating in the  X and L (IEEE) bands.

DETAILS:   The LONG TALK/TWO SPOT system consisted of two independently operating radars: a precision approach radar (PRL) operating in X-Band, and an airfield surveillance radar with a integrated Secondary radar (DRL) operating in L-Band.  


Specifications, DRL:

Frequency: 		  1250-1350 MHz (D Band (NATO),  L Band (IEEE))
Power output: 		  unknown kW(average);  230 kW (peak) 
PRF:			  550, 800, 1075 Hz	
Range Accuracy:		  120 m (range),    degrees azimuth 					
On/Off time:		  unknown
Deploy/Stow Time	  unknown minutes/  unknown minutes
 
Detection Range:  	  	
Max Range:		  150 km 


Specifications, PRL:

Frequency: 		  1250-1350 MHz (I Band (NATO),  X Band (IEEE))
Power output: 		  unknown kW(average);  70 kW (peak) 
PRF:			  2400 or 3000 Hz	
Range Accuracy:		  60 m (range),    1.2 degrees degrees azimuth 					
On/Off time:		  unknown
Deploy/Stow Time	  unknown minutes/  unknown minutes
 
Detection Range:  	  	
Max Range:		  35 km  (15 km in the rain)

  
NOTES:  IOC 1962. Two variants were produced: a mobile version built on ZIL 157 or ZIL 131 truck with an associated trailer, and a stationary version (RSP-7U) for fixed installation.  The Chinese Type-791-A is possibly a licence-made copy of the RSP-7.

SOURCES: "Radar Basics." Grundlagen Der Radartechnik. Accessed August 6, 2015. http://www.radartutorial.eu/19.kartei/karte922.de.html ; Jane's Radar and Electronic Warfare Systems Librarum.org." Page 362, Librarun.org - E-book Online. Accessed August 6, 2015. http://librarun.org/book/30265/362.
