OVERVIEW:  The SA-10a GRUMBLE SAM (S-300PT-1) battalion is a semi-mobile air defense unit using the S-300PT system.  It is intended to provide area defense against airborne threats at all altitudes.


DETAILS:  The SA-10a GRUMBLE SAM battalion is a semi-mobile air defense unit intended for providing strategic area defense of fixed targets against airborne threats. An S-300PT unit consists of a 5N66 FLAP LID A I-band fire control system, a CLAM SHELL 3D radar providing low level surveillance and tracking information and six launch vehicles.  At regimental and brigade level, a 36D6 (NATO reporting name TIN SHIELD) 3-D S-band surveillance radar was added. A typical engagement begins with detection by the TIN SHIELD or CLAM SHELL radar. Illumination and guidance duties are then handed off to the 5N63 FLAP LID radar which illuminates the target.   
 
After launch, an on-board inertial navigation system guides the missile until it is captured by FLAP LID A tracking-and-guidance system.  At this point, the command guidance system takes over, and directs the missile to its target.

The 5V55KD missile has a 15 second preparation cycle before firing.  The battery can track up to 12 targets and engage up to 6 targets at once using a single FLAP LID A radar.  The battery can fire a missile every 3-5 seconds.  


Specifications:

Maximum Acquisition Range: 	45 km (TIN SHIELD)(v. 1 m. sq. (B-1) size target @                                        100 feet); 65nm (CLAM SHELL v. target at 3000 ft) 
Maximum Tracking Range:		???
Engagement Envelope:		2.7-40 nm (range); 25-25,000 m (altitude)
Max Target Speed: 		2235 knts (head on), ??? knts (receding)
Reload Time:			?? minutes
Mobility:			semi-mobile
Emplacement/Displacement:	30 minutes.  


NOTES:  IOC: mid-1980's. The S-300PT-1 is an incremental upgrade of the original S300PT system. It introduced the 5V55KD missile and the cold launch method. Readiness time was reduced to 30 minutes and engagement range increased 40 nm.



SOURCES: Jane's Land Warfare Platforms: Artillery & Air Defense, "S-300P", 17 May 2016; 
Dr Carlo Kopp, PEng. "Almaz S-300P/PT/PS/PMU/PMU1/PMU2 / Almaz-Antey S-400 Triumf /SA-10/20/21 Grumble / Gargoyle." Air Power Australia. Last modified 2007. https://www.ausairpower.net/APA-Grumble-Gargoyle.html ; "Federation of American Scientists :: SA-10 GRUMBLE/300PMU/SA-N-6 GRUMBLE/HQ-10/15 (Chinese Licensed Copy)." Last modified September 9, 2013. https://fas.org/programs/ssp/nukes/nuclearweapons/russia_nukescurrent/sa10.html ; "S-300P Long-Range Air Defense Missile System | Military-Today.com." MILITARY TODAY - Everything About Modern Warfare. Accessed April 22, 2019. http://www.military-today.com/missiles/s300p.htm ; 
"Antiaircraft Missile Systems S-300PT." UKROBORONSERVICE. Accessed April 25, 2019. https://en.uos.ua/produktsiya/tehnika-pvo/78-zenitniy-raketniy-kompleks-s-300pt.