ARSR-2

ARSR-2 Long-Range Search Radar Set - A long-range ground search radar set built by Raytheon for the Federal Aviation Administration (FAA). First deployed about 1960. ARSR-2 Search Radar The ARSR-2 was a long-range L-band (1215- 1400 MHz) air-route-surveillance radar built by Raytheon for the FAA. Eighteen ARSR-2s were deployed by the FAA starting about 1960. The ARSR-2 was used as a surveillance system to detect azimuth and range of en-route aircraft operating between FAA terminal areas. The ARSR-2 was an upgrade of the ARSR-1 and also used a conventional magnetron feeding 400 kW peak power into an amplitron to provide an additional 10 dB gain. ARSR-2 Typical Equipment Layout prior to the Solid State Receiver/Digital Moving Target Indicator (SSR/DMTI) Modification. ARSR-2 Upgrades The ARSR-2 was based on a 1960s vintage radar that has been updated through the Service Life Extension Program (SLEP). The ARSR-2 is usually interfaced with a collocated Common Digitizer Model 1/2 (CD-1/CD-2) or other digital processors which provided digitized output. By 2015 all of the operating ARSR-2s had been further transformed into Common Air-Route-Surveillance (CARSR) radars with additional solid-state components that would extend the supportable life of the set into 2025. ARSR-2 Search Radar Element Value Notes Nomenclature ARSR-2 Origins ARSR-1 Variants Manufacturer Raytheon Type Search Number Made 18 IEEE Band L Frequency 1215-1350 MHz PRF 360 Hz Pulse Width 2 us Rotation Speed 5 rpm Antenna Power 4 MW 2.9 KW Peak Average Range 200 nmi long range Altitude 61,000 Introduced 1960 ARSR-2 Components (edit list) Component Model Quantity Height Width Deep Weight Notes Antenna Assembly FA-7000 1 -Antenna Reflector FA-7001 1 -Antenna Pedestal FA-7002 1 -Waveguiide Support FA-7003 1 -Circular/Linear Polarizer FA-7004 1 Transmitter-Modulator Assembly FA-7010 2 RF Assembly FA-7020 2 Moving Target Indicator Assembly FA-7040A 2 Voltage Regulator FA-7060 Radar Set Control FA-7070 1 Operations Master Concole & Maintenance Console Assembly FA-7080 1 Video Compensation Amplifier Assembly FA-7040 Distribution Panel Assembly FA-7100 Amplitron-Modulator Assembly FA-7110 2 Amplitron Power Supply Assembly FA-7120 2 Heat Exchanger FA-7130 2 Air Compressor Assembly FA-7135 1 Relay Assembly FA-7140 Waveguide Switch FA-7141 1 RF Dummy Load FA-7142 1 Ferrite Circulator FA-7155 Electrical Dummy Load FA-7137 2 See Also: ARSR-1 CARSR US Radar Sets Sources: Winkler, David F., Searching the Skies: the Legacy of the United States Cold War Defense Radar Program, USAF Hq Air Combat Command, 1997, 192 pages, Pdf, page 88. FAA - Recommendation on Transition from Primary/Secondary Radar to Secondary-Only Radar Capability. Links: Radomes - Radar Equipment Radar Tutorial - ARSR-1,-2 Attachment 4: Typical Legacy Site Infrastructure NTIA Report 82-92 - Output Tube Emission Characteristics of Operational Radars