OVERVIEW: The P-70 radar "Lena-M" is a static 2-D VHF early warning radar.

DETAILS: P-70 radars were dual-channel with the antenna working in both horizontal and vertical polarization. The radar used a single large antenna for both transmission and reception. The use of these techniques gave the P-70 excellent resolution at long range, as well providing protection against active and passive interference. The radar operated on two frequencies, 140 MHz for low altitude targets (aircraft and missiles) and 70 MHz for high altitude targets (satellites). 

The maximum search altitude was 160 km. 

The transmitting pulses had a pulse duration of 50 s with internal linear frequency modulation and a bandwidth of about 1 MHz. 

Specifications:

Frequency: 		70, 140 MHz
Power output: 		20 kW (average), 17MW (peak)
PRF:			 Unknown Hz
Range Resolution:	 650m, 0.7 degrees					
On/Off time:		 Unknown min
Detection Ranges
  Fighter size aircraft
	500 m altitude:	 Unknown km
 	10000m alt.:	 Unknown km

NOTES: IOC 1968.  

SOURCES: Cache:TEToxyxUNQMJ - Google search. (n.d.). Google. https://webcache.googleusercontent.com/search?q=cache:TEToxyxUNQMJ

Pike, J. (2019, 8). P-14 / 5n84a / Tall King. GlobalSecurity.org. https://www.globalsecurity.org/military/world/russia/tall-king.htm

Seite nicht gefunden. (n.d.). Grundlagen der Radartechnik. https://www.radartutorial.eu/19.kartei/11.ancient2/karte013.de.html+&cd=80&hl=en&ct=clnk&gl=us
