OVERVIEW: The CROSS SLOT is a fixed coastal defense radar, operating in the E/F (NATO) or S (IEEE) band.  

DETAILS: The Cross Slot is a coastal defense and early warning radar. It is a fixed system that is frequently deployed with an associated height-finding radar.


Specifications (Note: Specs are estimates based on P-20/TOKEN system):

Frequency: 		 2.7-3.1 GHz (E/F Band (NATO), S Band (IEEE)))  
Power output: 		 unknown kW(average); 1 MW (peak) 
PRF:			 375 pps (approx)	
Range Resolution:	 400 m (range), 1.5 degree azimuth 					
On/Off time:		 unknown seconds
Deploy/Stow Time	 unknown min / unknown min
Maximum Range:		 162 nm 

NOTES: System was also used for early warning against low flying aircraft.  

SOURCES: NSA Cryptologic History Series: Southeast Asia, SIGINT Applications in U. S. Air
Operations, Part One: Collecting the Enemy's Signals, February 1972, pg. 34; Pike, John. P-20 / Pereskop / TOKEN. 7, 2019. https://www.globalsecurity.org/military/world/russia/token.htm.

