Radar Types

CPN - Air Transportable; Radar; Navigation Aid

CPN-1 – Air Transportable Beacon
Frequency: S band

CPN-2 – Air Transportable, transponder for short range aid in blind bombing;
Frequency: 290-330 MHz
Power Output: 30 kw
Pulse Width: 0.8 µseconds
Pulse Repetition Rate: 930
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: RCA; 1940-1945, 68 procured.

CPN-3 – Air Transportable, Ground Radar Beacon
Frequency: 3256MHz
Power Output:
Pulse Width:
Pulse Repetition Rate:
Range: 150 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Philco Corp;
Notes: Project 404A at Camp Evans Signal Laboratory 1943

CPN-4, -4A, -4B Air Transportable; Precision Approach; Search System:
Search
Frequency: 2780 to 2820 MHz
Power Output: 600 kw peak
Pulse Width: 0.5 µseconds
Pulse Repetition Rate: 1500 pps
Range: 18 nautical miles @ 2000 feet, 28 nautical miles @6000 feet, 36 nautical miles @10,000 feet
Vertical Coverage: 0.5 to 45 degrees from 0 to 8,000 feet
Horizontal Coverage: 360 degrees
Antenna: 360 degrees CW, mechanical scan
     Speed: 20, ±2 rpm
     Beam Width:
Indicator Type and Quantity:
Manufacturer:
Notes:
Precision
Frequency: 9000 to 9160 MHz
Power Output:
Pulse Width: 0.18 µseconds
Pulse Repetition Rate: Normal 1833 or 5500 pps, MIT 5500 pps
Range: at least 8 nautical miles
Vertical Coverage: Antenna Scan: 2 to 9 degrees, with respect to Indicator Maps, -1 to +6 degrees with respect to ground line
Horizontal Coverage: 2 to 22 degrees with respect to Indicator Maps, -5 to +15 degrees with respect to runway;
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity: Azimuth and Elevation combined on 12 inch CRT, elevation on upper half, azimuth on lower half, sector limiting to prevent overlapping
Manufacturer: Raytheon/Gilfillan
Notes: Only difference between -4, -4A and -4B is the type of communication equipment used; used with AN/MPN-1; Self-contained two-trailer system; Link
Photos
     
CPN-5 - Air Transportable; Navigation Aid

CPN-6 - Air Transportable; X-Band Beacon
Frequency: 9310 MHz
Power Output: 40 kw
Pulse Width: 0.5 µseconds
Pulse Repetition Rate:
Range: 100 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer:
Notes: "Minnie"; Designed for ground, ship or truck installation; Transmits only when interrogated by special radar pulse; Emission: Coded Pulse; Pulse Combinations 2 to 6 pulses, 56 possible codes; Manufacturer: Galvin; used with AN/APS-10

CPN-7 - Air Transportable; Blind Landing Beacon
Notes: 1940-1945, 125 procured.

CPN-8 - Air Transportable; Beacon
Frequency: S-Band

CPN-9 - Air Transportable; Weather Radar
Frequency: 9300 MHz
Power Output: 250Kw
Pulse Width: 5 & 0.5 µseconds
Pulse Repetition Rate: 186 & 931
Range: 250 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer:
Notes:

CPN-10 - Air Transportable; Radar Beacon

CPN-11 - Air Transportable; Master/Slave LORAN System (with AN/CPN-12)
Notes: Used with AN/APN-4; AN/APN-9; 1940-1945, 15 procured.

CPN-12 Air Transportable; Master/Slave LORAN System (with AN/CPN-11)
Notes: Used with AN/APN-4; AN/APN-9

CPN-13 - Air Transportable; Beacon

CPN-14 - Air Transportable; Monitor Unit (?)

CPN-15 - Air Transportable; Beacon

CPN-16 - Air Transportable; Beacon

CPN-17 - Air Transportable; IFF Beacon
Frequency: S-Band
Manufacturer: Galvin
Notes:

CPN-18 - Air Transportable; S-Band Surveillance Radar portion of an Air Traffic Control System
Frequency: 2700 to 2900 MHz
Power Output: 500 kw peak
Pulse Width: 0.5 µseconds, 1 µsecond in modified sets
Pulse Repetition Rate: 1500 pps (900 in modified sets)
Range: 53 nautical miles (70 nautical miles for modified sets)
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed: 10 rpm clockwise only
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Bendix Radio
Notes:

-18A Is similar to CPN-4 and MPN-11; differs in that -18 does not include the precision portion of equipment and is not trailer mounted;

-18 C Differs in that the Indicator Group -18A is replaced by Indicator Group -18C and range is increased to 200 miles; Is a composite of -18 and -18A;

-18D Differs from other models by modification by TP 31P5-2CPN18-539;

CPS-1 – Air Transportable; Microwave Early Warning (MEW)
Radio Set AN/CPS-1 is a heavyweight fixed transportable microwave early warning radar designed for long range and high angle coverage for fixed operation in an area of high traffic density. It is the production model of the pre-production AN/CPS-1A
Frequency: 3200 mc, 10-cm wavelength
Range: 200 miles
Indicator Type and Quantity: 7 inch PPI's; combination PPI and plotting table called a skiatron (projection PPI); can accommodate as many as 18 indicators
Antenna: Double lobe, one for low angles and one for high. Each lobe has its own transmitter, receiver, and indicator. Weight 5 tons, 25 feet long
     Speed:
     Beam Width:
Manufacturer: General Electric
Notes: Complete installation weighs 66 tons. When it is necessary to make it mobile, 10 trucks are required for MEW gear and 6 more for VHF installation. Ready for travel in 1 1/2 days
Photos

CPS-1A - Air Transportable, Microwave Early Warning (MEW)
Indicator Type and Quantity: 12 inch PPI

CPS-2 – Air Transportable; Early Warning; medium-range;
Frequency: 510 to 725 MHz (to counter jamming)
Manufacturer: Federal Telephone and Radio Corp
Notes: Project 424B at Camp Evans Signal Laboratory 1943.

CPS-3 – Air Transportable; Search Radar
Notes: Project 421 at Camp Evans Signal Laboratory 1943

CPS-4 – Air Transportable; Height Finder, to supplement MEW and SCR-270 and SCR-271; Photos
Notes: "Big Weapon", "Big Beaver"

Developed by MIT’s Radiation Laboratory, this height-finding radar was nicknamed “Beaver Tail.” The radar was designed to be used in conjunction with the SCR-270 and SCR-271 search sets. The CPS-4 required six operators. This S-band radar, operating in the 2700 to 2900 MHz range, could detect targets at a distance of ninety miles. The vertical antenna was twenty feet high and five feet wide. This radar was often paired with the AN/FPS-3 search radar during the early 1950s at permanent network radar sites. (Ref: Searching the skies)

CPS-5 - Air Transportable; GCI Radar
Radio Set AN/CPS-5 is a medium weight transportable search radar designed for early warning and for use in conjunction with a separate height finding set for ground control of aircraft (GCI included) in the consolidation and fixed phase of an aircraft warning system. Transmitter, modulator and receiver are essentially the same type as employed in the AN/TPS-1B.
Frequency: 1300 MHz
Power Output: 750 kilowatts peak
Pulse Width: 2 microseconds
Pulse Repetition Rate: 400 pps
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna: 14 feet high, 25 feet wide, parabolid section, modified for cosecant squared pattern, which provided early warning coverage comparable to the SCR-270 but had the additional feature of providing solid coverage to distances of over 70 miles for elevations up to 40,000 feet.
     Speed:
     Beam Width:
Indicator Type and Quantity: Two 12 inch PPI(same as that used in the AN/CPS-1A; One A-Scan
Weight: 40,000 pounds including spare
Operating Crew: Five men required: PPI operator, A-Scan operator, Plotter teller, Recorder and radar repairman
Manufacturer: General Electric & Bendix
Notes: Designed by Bell Telephone Laboratories; Used with CPS-4; Production started January 1945. Used in conjunction with TPS-10

Bell Telephone Laboratories and General Electric developed this search radar. General Electric began producing sets in January 1945. Designated as transportable medium-range search radar, the unit was ideal for use in the Lashup system in conjunction with the AN/TPS-10 height-finder radar. It could be operated with a crew of ten. Some of these units remained to serve in the first permanent network. Designed to provide a solid search of up to 60 miles at 40,000 feet, the radar often had success tracking aircraft as far as 210 miles away. (Ref: Searching the skies)

CPS-6; B - Air Transportable; S-Band Search & GCI Radar
Description: A tower mounted integral high power search and height-finding radar set operating in the S band. This set had MTI operation. The indicators used in this system were as follows, ten PPI's, four HRI's, and five expanded B indicators. Radar set AN/CPS-6B and AN/FPS-10 differ with respect tot he inter cabling between systems components, the number of indicators, the telephone equipment, and the quantity of plotting equipment supplied.
Frequency: 2700 to 3010 MHz
Power Output: 750 - 1000 kilowatts from each of five transmitters
Pulse Width: 1 µsecond at 600 pps or 2 µseconds at 300 pps
Pulse Repetition Rate: 300 or 600
Range: 150 mile range on vertical beam and 240 miles on sloping beam; 120 miles height finding
Vertical Coverage: From 120 miles to a slant angle of 24°; upper limit 40,000 feet
Horizontal Coverage: 360 degrees
Antenna: V-beam
     Vertical Assembly: Consisted of one three-section freed; one six-panel reflector; one thee-section truss; one IFF antenna support; one feed support.
     Beam Pattern: Slant beam displaced 45° from vertical. Ground edge of slant beam lags 10° behind vertical.
Indicator Type and Quantity: Ten 12-inch cathode-ray tube displays polar co-ordinates with 10° and 30° angle markers; 10-mile and 50-mile range markers. 360° azimuth coverage. Off-center operation available. Maximum range 200 miles. Expanded B: Five 12-inch cathode-ray tubes. Displays rectangular coordinates. 45° or 90° azimuth coverage. Maximum delay 120 miles. Range delay up to 240 miles. Height Indicators: Four 12-inch cathode-ray tubes. Displays semi-rectangular coordinates. Maximum range 140 miles. Maximum height 50,000 feet. Expanded A: One 5-inch cathode-ray tube. Display range and amplitude of slant and vertical video. Calibrated for 0-15, 0-100, and 0-250 nautical miles maximum range.
Manufacturer: General Electric
Notes: First radar to use “V” beam. 

The AN/CPS-6 was developed during the later stages of World War II by the Radiation Laboratory at MIT. The first units were produced in mid-1945. General Electric developed and produced the A model and subsequent B-model at a plant in Syracuse, New York. The unit consisted of two antennas. One of the antennas slanted at a forty-five degree angle to provide the height-finder capability. Initially, the radar was designed to detect fighter aircraft at 100 miles and 16,000 feet. The radar used five transmitters that operated at S band frequencies ranging from 2700 AN’CPS-6 to 3019 MHz. It took twenty-five people to operate the radar. An AN/CPS-6 radar was installed as part of the Lashup system at Twin Lights, New Jersey, in 1949 and proved capable of detecting targets at ranges of eighty-four miles. The first units of the follow-on 6B radar set were ready for installation by mid-1950. Fourteen 6B units were used within the first permanent network.
A component designed to improve the radar’s range was added in 1954. Initial tests showed the 6B unit had a range of 165 miles with an altitude limit of 45,000 feet. One radar unit and its ancillary electronic equipment had to be transported in eighty-five freight cars. The Air Force phased out the 6B model between mid-1957 and mid-1959. (Ref: Searching the skies)

CPS-7 – Air Transportable; Search Radar

CPS-8 – Air Transportable; Search Radar

CPS-9 - Air Transportable; X-Band Weather Radar
Frequency: 9317 ±87 MHz
Power Output: 250 kw (short pulse), 225 kw (long pulse) peak; 115 w (Short Pulse) 230 w (long pulse) average
Pulse Width: 0.5 µseconds (short pulse), 5.0 µseconds (long pulse)
Pulse Repetition Rate: 931 pps (short pulse) 186 pps (long pulse)
Range: 1/2 to 250 Statute miles
Vertical Coverage:
Horizontal Coverage:
Antenna: Parabolic Reflector
     Speed:
     Beam Width: 1 degree
Indicator Type and Quantity: RHI 7 Inch CRT, A/R 5 inch CRT, PPI 12 inch CRT
Manufacturer: Raytheon Manufacturing Co.
Notes:

GPA - Ground; Radar; Ancillary

GPA-17 - Search
Manufacturer: Bendix Aviation Corporation

GPA-23 - Tracking Radar
Manufacturer: General Electric

GPA-27 - Search Radar
Manufacturer: Bendix Aviation Corporation

GPN-2 – Mobile Ground Radar Search System;
Frequency: 2869 to 2900 MHz
Power Output: 200 kw peak
Pulse Width: 0.5 µseconds
Pulse Repetition Rate: 2,000 pps
Range: 20 miles at 5,000 feet, 30 miles maximum
Vertical Coverage:
Horizontal Coverage:
Antenna: Ribbed parabolic dish; Antenna feed: coaxial cable
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Bendix Radio Division
Notes: The operating shelter is constructed on skids and may be removed from truck for semi-permanent installation;

GPN-6 Mobile Ground Radar Search System;
Frequency: 2700 to 2900 MHz
Power Output: 500 kw peak
Pulse Width: 0.9 µseconds
Pulse Repetition Rate: 1000 pps
Range: Approximately 60 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Laboratory for Electronics Inc.
Notes: Similar to GPN-2 with addition of MIT and added indicators, greater range and larger antenna; Equipment is mounted in two trailers and a 1-ton truck;

GPS-3 - Search
Manufacturer: General Electric Co.

GPS-4; A – Long Range Surveillance
Frequency: 1300 MHz
Power Output: 2 Mw
Pulse Width: 3.2 µseconds
Pulse Repetition Rate: 360
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Bendix Aviation Corp.
Notes: Mobile version of the FPS-20; Magnetron Transmitter;

GSS-1 – Electronic Search Central (also see TPS-1)
Note: Electronic search central AN/GSS-1 provided facilities for a four-man team to operate radar set AN/TPS-1D and interrogator set AN/TPX-19 in a shelter. The shelter in addition to affording protection for personnel against foul weather provides facilities for a plotting team to work from information supplied by the radar and IFF operator and from outside sources. Communications with the outside was provided by radio receiving set AN/GRR-5, radio set AN/GRC-9 and by three telephone lines. Communication on the inside between members of the crew was provided by an interphone system.
Electronic search central AN/GSS-1 was used in the following ways:
(1) As a unit in the aircraft early warning network, to search for targets, identify them, and report target information to battalion or higher AAOC's by telephone or radio.
(2) To function in a emergency as an antiaircraft operations center by furnishing facilities for collection and evaluation of information and necessary fire directions.
(3) To provide other functions to meet various field conditions as designated by proper authority.
Shelter: The operating equipment of electronic search central AN/GSS-1 was enclosed in a reinforced aluminum skin shelter approximately 6 feet high, 6 feet wide, and 12 feet long. Installed as part of the shelter was an internal wiring system for lighting, power distribution, and audio communication; a thermostatically controlled gasoline burning heater; and 2 cooling blowers.
Main Equipment: the main operating equipment of Electronic Search Central AN/GSS-1 included radar set AN/TPS-1D, interrogator set AN/TPX-19 and plotting board PT-171/TPS.
Horizontal Coverage: 360°
Antenna: OA-1227 (XE-1)/TPS; is a high gain transportable antenna system designed for use with Radar Set AN/TPS-lD as installed in Radar Surveillance Center AN/GSS-I.
     Width: 40 feet
     Height: 11 feet
     Beam Width: 1.7° wide and 6.0° high
Note: To make the AN/TPS-1D and AN/TPS 1G radars more compatible with unit mobility, they were packaged in a metal shelter, They also were assigned a new name, electronic search central AN/GSS-1. (Ref: US Army Air Defense Digest, 1972)

GSS-7 – Mobile Tactical Radar
Frequency: 1250 and 1350 MHz
Power Output: 500 kw
Pulse Width: 1 & 4 µseconds
Pulse Repetition Rate: 300 & 600
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna: 40 feet by 11 feet. (See GSS-1 & TPS-1)
     Speed:
     Beam Width:
Indicator Type and Quantity: 7" PPI
Manufacturer: Raytheon
Input Power: 120V, 3 ph, 400Hz
Notes: When the larger 11- by 40-foot tripod-mounted antenna is provided with these radars(GSS-1), the equipment becomes electronic search central AN/GSS-7. (Ref: US Army Air Defense Digest, 1972)

Camp Sentinel Radar - I, II, III Battlefield, foliage penetrating radar
Frequency: 435 MHz
Power Output:
Pulse Width:
Pulse Repetition Rate:
Range:
Vertical Coverage:
Horizontal Coverage: Thirty-two steps for 360 degree coverage
Antenna: electronically scanned cylindrical array;
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Lincoln Laboratory
Notes:

I - prototype, 1967;

II - advanced design, 1968; sent to Vietnam for tests in August 1968;

III - (improved version by the U.S. Army's Harry Diamond Laboratory) More powerful transmitter; greater range; additional display options; 6 manufactured and sent to Vietnam and in operation until end of war. {Lincoln Laboratory Journal Volume 12, Number 2, 2000}

Coastal Mobile Surveillance Radar Unit - Manufactured by Selex.

FAAR - See TPQ-32 and MPQ-49

GCA-2000 -
Manufacturer: Gilfillan;
Notes: brochure

HELRASR - Highly Expeditionary Long Range Air Surveillance Radar (HELRASR)
Notes:  Provides a one-for-one replacement / modernization effort for the AN/TPS-59(V)3

HIPAR – See MPQ-44

HIPAR FAN - Nike

KPQ-1 – Mortar Locator
Frequency: 8500 to 9600 MHz
Power Output: 180 kw
Pulse Width: 1 µsecond
Pulse Repetition Rate: 1100
Range: 8,000 meters
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer:
Notes: Marine Corps radar.  Based on the SPQ-6.

LAADS – Low Altitude Detection Radar
Frequency:
Power Output:
Pulse Width:
Pulse Repetition Rate:
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Sanders Associates
Notes: Variant of MPQ-49

Land-Based Phalanx Weapon System -
Manufacturer: Raytheon
Notes: brochure

LOPAR – Nike

MACS – Mobile Approach Control System
Frequency:
Power Output:
Pulse Width:
Pulse Repetition Rate:
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Gilfillan-ITT
Notes:

Master A - 3D multi-function Air Defense Radar,
Manufacturer: Raytheon;
Notes: brochure

Master M - Long range Infrastructure 3D Surveillance Radar,
Manufacturer: Raytheon;
Notes: brochure

Master S - Intermediate Range Tactical 3D Air Defense Radar,
Manufacturer: Raytheon;
Notes: brochure

Master T - Long Range Tactical 3D Surveillance Radar,
Manufacturer: Raytheon;
Notes: brochure

MEW- microwave early warning, or
Notes: in AN terminology, the AN/CPS 1

PAR-2000 -
Manufacturer: Gilfillan;
Notes: brochure

RAC 3D - Intermediate Range Tactical 3D Surveillance Radar,
Manufacturer: Thales Raytheon;
Notes: brochure

ROTHR - Relocatable Over The Horizon Radar,
Manufacturer: Raytheon
Notes: brochure

SC-3
Notes: “Navy type radar”. Listed as a type of radar used repeatedly in 568th Air Warning Battalion Unit History.

Silent Senty -
Manufacturer: Lockheed Martin.
Notes: Silent Sentry

Threat Radar Simulators - Manufactured by DRS Technologies

Watchman
Description: E/F-band medium-range 2D radar, medium-range Air Traffic Control (ATC) and surveillance (and surface vessel movement).
Frequency: 2,750 - 3,050 MHz
Antenna
Speed: 15 rpm
MTI improvement: 46 db
Range 3 square meter target: 80 nm at 30,000 feet, 60 nm at 10,000 feet
Manufacturer: BAE
Notes: US Air Force purchased on Watchman radar for $3.125 million. A dual pulse train is used; it has a very short pulse (0.4 microseconds) for high discrimination at short ranges and a much longer pulse (20 microseconds) for long-range detection of aircraft with small radar cross sections.  The long pulse is compressed in the receiver using a surface acoustic wave equalizer.  Signal separation is achieved by using different radio frequencies for the long and short pulses.  Target detection is further enhanced by interchanging frequencies at nine pulse repetition intervals.  Watchman thus provides frequency diversity using a single transmitter.  The resulting overall stability contributes significantly to anti-clutter performance.
Variants: ASR - Airport Surveillance Radar; (T) Transportable, (S) Solid-state transmitter, Guardsman-S for coastal traffic, including surface vessels and fixed/rotary-wing aircraft, Guardsman-C Advanced version of the Guardsman providing a limited 3D capability through the incorporation of extra transmit beams.
History:

       Month            Year             Major Development
                                   1980             Watchman developed by Plessey as private venture
                                   1983             UK MoD orders Watchman
                                                         Finland orders Watchman
          Mar                 1984             Ghana and Dubai order Watchman
                                                         Second Watchman order from Finland
                                   1985             Watchman (T) in production
                                                         RAF and two other clients order Watchman (T)
                                                         Spain and Bahrain order Watchman
                                                         Watchman (CSR) enters production
          Feb                  1986             Oman and China order Watchman
          Nov                 1987             Finland orders four more Watchman radars
          Jan                  1988             India orders Watchman
          Feb                                        UK CAA orders six Watchman systems
                                                         Portuguese Air Force orders Watchman
          Jul                                          USAF begins evaluation of Watchman
          Nov                                       USAF orders one Watchman
          Mar                 1990             Switzerland orders Watchman
          May                                      Completion of testing of USAF Watchman
          Spring                                   Contract issued for USAF competition between Watchman and the TPS-73
          Jan                  1992             Scottish radar replacement program contract
          Aug                 1994             Watchman (S) development announced
          Mar                 1995             Upgraded Watchman installed at HMS Cambridge, a training and gunnery school of the UK Royal Navy
          Mar                 1998             British Aerospace acquires Siemens-Plessey, becoming BAE Systems
          Apr                  2001             Watchman transferred from BAE Systems to Alenia Marconi
                                   2003+           Ongoing production of Watchman (T)
                                                        

XT 1 - Experimental prototype of the SCR-584; Built 1941; Warning range 90,000 yards, Tracking Range 32,000 yards;

MPG-1 - Fire Control
Frequency: 9090 MHz 3-cm
Power Output: 35 kw peak
Pulse Width: 1 µsecond, 0.25 µseconds
Pulse Repetition Rate: 1024
Range: Minimum 500 yards, Maximum 80,000, 30,000 for short range
Vertical Coverage:
Horizontal Coverage: 360 degrees or sector scan
Antenna:
     Speed: PPI slewing and scanning rate is 20 degrees per second, B-scope tracing rate is 1.5 degrees per second
     Beam Width: Horizontal 0.6 degrees, Vertical 3 degrees
Indicator Type and Quantity: Presentation 7 inch PPI and two 7 inch B-scopes
Manufacturer:
Notes: Medium range; trailer mounted; Formerly the SCR-598; Tech Manual Excerpts
Photo

MPG-2 - Fire Control Tracking
Frequency: X-band

MPN-1 – Ground Controlled Approach
Description: The Radio Set AN/MPN-1 is a mobile ground radar system providing facilities for directing the movement of aircraft over a predetermined glidepath for safe approach to an airdrome runway under conditions approaching zero visibility. It consists fundamentally of a truck and a trailer. Included in the truck are two power units (rated output of each 7.l5 kw), one air conditioner unit and two metal boxes containing equipment spare parts. The trailer contains the radar and communications systems.
Frequency: Precision 3 centimeters X-band, Search 10 centimeters S-band
Power Output: Precision 15-20 kw peak, Search 85-100 kw peak
Pulse Width: 0.5 µseconds
Pulse Repetition Rate: 2,000 pps
Range: Precision Range 10 miles in radius, Search 7.5, 15 or 30 miles
Vertical Coverage: 20 degree (-1 degree to +21 degrees); Elevation Beam: 7 degree (+1 degree to +8 degrees); Height limit 4,000 feet;
Horizontal Coverage: search: 360 degrees; precision: 20 degrees
Antenna:
     Speed: Azimuth and Elevation 1 or 4 "looks" per second, Search Antenna 30 rpm
     Beam Width: Azimuth 1 degree; Elevation 3.6 degrees
Indicator Type and Quantity: 2 PPI for search; precision: Expanded Partial PPI, 4 indicators two for azimuth and two for elevation; each pair includes one operating with a two mile range and one operating with a ten mile range. Six cathode ray tubes and two error meters. Two of the cathode ray tubes are the duplicate PPI indicators of the Search System. Of the remaining four, two present azimuth data and two present elevation data in the Precision System.
Manufacturer: Gilfillan & Federal;
Notes: 1940-1945, 114 procured; Setup time 2 1/2 hours for complete set up. Change of runways 40 minutes; Tech Manual Excerpts;
Photos

-1A
Frequency: Precision X-band, Search S-band
Power Output: Precision 15 kw peak, Search 80 kw peak
Pulse Width: 0.5 µseconds
Pulse Repetition Rate: 2,000 pps
Range: Precision Range 10 miles, Search 30 miles
Vertical Coverage: 20 degree (-1 degree to +21 degrees); Elevation Beam: 7 degree (+1 degree to +8 degrees)
Horizontal Coverage: 360 degrees
Antenna:
     Speed: Azimuth and Elevation 1 or 4 "looks" per second, Search Antenna 30 rpm
     Beam Width: Azimuth 1 degree; Elevation 3.6 degrees
Indicator Type and Quantity:
Manufacturer:
Notes:

-1B
Frequency: Precision X-band, Search S-band
Power Output: Precision 15 kw peak, Search 80 kw peak
Pulse Width: 0.5 µseconds
Pulse Repetition Rate: 2,000 pps
Range: Precision 10 miles, Search 30 miles, Direction Finder 135 miles
Vertical Coverage:
Horizontal Coverage: 360 degrees
Antenna:
     Speed:
     Beam Width: Azimuth Antenna Beam: 20 degrees (-1 to +21 degrees); Elevation Antenna Beam: 7 degrees (+1 to +8)
Indicator Type and Quantity:
Manufacturer: Bendix Radio Division
Notes:

MPN-2 - Radar Beacon
Frequency:
Power Output: A-band 15 watts, B-band 75 watts
Pulse Width:
Pulse Repetition Rate:
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Meissner Manufacturing Company
Notes:

MPN-3 – Ground Control Approach
Frequency: One S-band and one X-band radar
Power Output:
Pulse Width: 0.5 µseconds
Pulse Repetition Rate: 2,000 pps
Range: 30 miles
Vertical Coverage: 4,000 feet
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer:
Notes: Similar to the MPN-1A except that it has a single rather than two radar sets for each channel, improved mobility due to decreased weight, fewer communications channels, reduced number of operating personnel, better construction to facilitate maintenance and improved performance; Manufacturer: Bendix;

MPN-5 - Ground Control Approach
Frequency: Precision X-band, 9000 to 9180 MHz, Search S-band, 2740 to 2900 MHz
Power Output: Precision 25 kw, Search 500 kw
Pulse Width: Precision 0.5 µseconds, Search 0.8 µseconds
Pulse Repetition Rate: Precision 2,100 pps, Search 1200 pps
Range: Precision 10 miles, Search 50 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Bendix Radio Division
Notes:

-5A -
Manufacturer: Bendix Radio Division
Notes: Incorporates some slightly modified major units of the -5, and some of later design

MPN-8 - Radar Beacon
Frequency:
Power Output: 200 & 400 watts
Pulse Width:
Pulse Repetition Rate:
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Meissner Manufacturing Company
Notes:

MPN-11 – Precision Approach
Frequency: 9000 to 9160 MHz
Power Output: 45 kw
Pulse Width: 0.18 µseconds
Pulse Repetition Rate: 3300 pps
Range: 10 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Gilfillan Brothers Inc./Raytheon
Notes:

MPN-13 – Precision Approach
Frequency: 2700 to 2900 MHz, and 9000 to 9160 MHz
Power Output: 45 & 500 kw
Pulse Width: 0.18 µseconds
Pulse Repetition Rate: 1,500 & 5,000 pps
Range: 10 miles
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Gillfilan
Notes:

MPN-14, G, K – Air Traffic Control
Frequency:
Power Output:
Pulse Width:
Pulse Repetition Rate:
Range: 60 nautical miles
Vertical Coverage: 15 Nautical miles to touchdown
Horizontal Coverage: 15 Nautical miles to touchdown
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer: Gilfillan
Notes: Landing Control Central (configurable as Radar Approach Control (RAPCON) or Ground Controlled Approach (GCA) facility; Gilfillan brochure;

MPN-15 – GCA
Manufacturer: Gilfillan.

MPN-17; A – Landing Control
Frequency: 3000 and 10,000 MHz; 2780 and 2820 MHz
Power Output:
Pulse Width:
Pulse Repetition Rate:
Range:
Vertical Coverage:
Horizontal Coverage:
Antenna:
     Speed:
     Beam Width:
Indicator Type and Quantity:
Manufacturer:
Notes: trailer mounted.

MPN-25 - Gilfillan brochure;

MPN-26 - Gilfillan brochure;

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