# Mark 92 Guided Missile Fire Control System
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thumb|300px|right|The Mark 92 is part of the combat systems of the Oliver Hazard Perry class frigate
The '''Mark 92 Fire Control System''' is a US-built medium-range anti-aircraft missile and gun fire control system. It was developed for the FFG-7 [Oliver Hazard Perry class guided missile frigates](/source/Oliver_Hazard_Perry_class_frigate). The system is a licensed [USN](/source/USN) version of the [Thales Nederland](/source/Thales_Nederland) WM-25 fire control system. The Mark 92 fire control system was approved for service use in 1975. Introduction to the fleet and follow-on test and evaluation began in 1978.[{{cite web|url=http://www.globalsecurity.org/military/systems/ship/systems/mk-92-fcs.htm|title=MK 92 Fire Control System (FCS)|publisher=GlobalSecurity.org|accessdate=2008-12-12}}]
==Radar Systems==
thumb|right|upright|MK-92 Mod 2 Functional Diagram.jpg
The Mark 92 system assigns targets via the ship's air search radar, and surface search radar or from the Mark 92's own search radar capabilities.[ The system has two or three radar sub-systems depending on the model. The first two are combined into a single system called the Combined Antenna System or CAS is used in all models. The CAS has a track while scan radar (Search) and a tracking radar both housed in an egg shaped radome. The radars can search for, track, and illuminate targets. There is also a third radar for target illumination referred to as the Separate Target Illumination Radar or STIR. The STIR is a radar developed from the [AN/SPG-60](/source/AN%2FSPG-60) radar that is part of the Mark 86 gun fire control system.
==Versions==
thumb|right|upright|Cross-section of a Mark 92's Combined Antenna System
thumb|right|upright|Mk92 STIR Illumination Radar
*Mark 92 modification 0 is an early version of the system for the USN.
::Gun and missile control:
::1 air engagement channel
::2 surface-search, TWS channels
*Mark 92 modification 1 is the version used by United States Coast Guard cutters as well as the [PHM](/source/Pegasus-class_hydrofoil)-1 Class USN hydrofoils (excluding {{USS|Pegasus|PHM-1|6}}. It does not use the STIR or control surface to air missiles.
:Gun only:
::1 air engagement channel
::2 surface-search, TWS channels
*Mark 92 modification 2 is the version that was originally fit to USN Oliver Hazard Perry-class guided missile frigates. It was also installed on the [''Adelaide''-class derivatives](/source/Adelaide-class_frigate) built for Australia.
::Gun and missile control:
::2 air engagement channels, including STIR with Mark 107 console
::2 surface-search, TWS channels
*Mark 92 modification 5 is used by certain Saudi Arabian [Badr-class corvette](/source/Badr-class_corvette)s ([http://militaryedge.org/armaments/al-siddiq-pgg-1-class/ PGG] and [http://militaryedge.org/armaments/badr-class-pcg-1-class/ PCG] Class ships).
::Gun only:
::1 air engagement channel
::2 surface-search, TWS channels
*Mark 92 modification 6 is an upgraded version of the modification 2 as part of the CORT program. It was installed on 12 USN FFG-7-class frigates, the eight Republic of China Navy's [Cheng Kung-class frigate](/source/Cheng_Kung-class_frigate)s and two of the Spanish [Santa Maria-class frigate](/source/Santa_Maria-class_frigate)s.
::2 air engagement channels, including STIR with Mark 107 console and (coherent receiver/transmitter CORT) transceiver
::2 surface-search, TWS channels
{| class="wikitable"
|Modification
|Surface Engagement Channels
|Air Engagement Channels (gun)
|Air Engagement Channels (missile)
|-
|0
|2
|1
|1
|-
|1
|2
|1
|0
|-
|2
|2
|1
|2
|-
|5
|2
|1
|0
|-
|6
|2
|1
|2
|-
|}
][{{cite web|url=http://www.globalsecurity.org/military/systems/ship/systems/mk92-fcs.pdf|title=MK 92 Fire Control System Manufacturer Doc. |publisher=GlobalSecurity.org|accessdate=2009-02-26}}]
==STIR (Separate Target Illumination Radar) Deactivated==
The [USN](/source/USN) retired the [RIM-66E, or Standard missile-1](/source/RIM-66_Standard), from active service in 2003. Oliver Hazard Perry frigates in [USN](/source/USN) service have had the STIR radar removed. The STIR radars are still in use on non-USN vessels.
==References==
{{reflist}}
==See also==
*[Badr class corvette](/source/Badr_class_corvette)
*[Hamilton class cutter](/source/Hamilton_class_cutter)
*[RIM-66 Standard](/source/RIM-66_Standard)
*[Oliver Hazard Perry class frigate](/source/Oliver_Hazard_Perry_class_frigate)
*[Mark 74 "Tartar" Guided Missile Fire Control System](/source/Tartar_Guided_Missile_Fire_Control_System)
*[USCG Medium Endurance Cutter](/source/USCG_Medium_Endurance_Cutter)
*{{Commonscat-inline|Mark 92 Fire Control System}}
Mk092
Weapons
Category:Military equipment introduced in the 1970s
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Adapted from the Wikipedia article [Mark 92 Guided Missile Fire Control System](https://en.wikipedia.org/wiki/Mark_92_Guided_Missile_Fire_Control_System) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Mark_92_Guided_Missile_Fire_Control_System?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.