Search results
Results from the WOW.Com Content Network
The new group is organizing as a tax-exempt 501(c)(3) and will soon be in a position to accept donations for badly needed roof and foundation repairs. The lengthy process of listing the Saugatuck Gap Filler Annex on the National Register of Historic Places was successfully concluded in late 2022.
Radar, Anti-Aircraft Number 4 Mark 7, or AA No.4 Mk.7 for short, was a mobile medium-range tactical control radar used by the British Army.It was intended to rapidly scan the sky and quickly indicate targets that could then be handed off to anti-aircraft artillery batteries who would then aim their own gun laying radars like the AA No. 3 Mk. 7 using the image provided from the No. 4 on a ...
Marine radars are used by ships for collision avoidance and navigation purposes. The frequency band of radar used on most ships is X band (9 GHz/3 cm), but S band (3 GHz/10 cm) radar is also installed on most oceangoing ships to provide better detection of ships in rough sea and heavy rain condition.
SJ radar was a type of S band (10-cm) radar set used on American submarines [3] during the Second World War. [4] The widespread use of the SJ radar, combined with the very low use of radar in the Imperial Japanese Navy, gave great operational flexibility to the United States Navy's submarine campaign in the Pacific Ocean.
Tethered Aerostat Radar System in New Mexico. The first aerostats were assigned to the United States Air Force in December 1980 at Cudjoe Key, Florida.During the 1980s, the U.S. Customs Service operated a network of aerostats to help counter illegal drug trafficking.
AN/SPQ-9A (sometimes pronounced as "spook nine") is a United States Navy multi-purpose surface search and fire control radar used with the Mk-86 gun fire-control system (MK86 GFCS).
The transmitter, with a peak power of 300 kW in the band (λ = 3 cm), is a 4J 50 type magnetron. The receiver has a noise figure of 9 dB, with mixers and preamplifiers . The entire system consists of subminiature tubes of types 6111 and 61126, [ 4 ] arranged in 30 rows containing 9, 7, or 5 tubes.
The AN/APG-79(V)4 has been selected for retrofitting the F/A-18C/D [5] and upgrading the fleets of F/A-18 fighters in Malaysia and the United States Marine Corps. The APG-79(V)4 is the first U.S. fighter radar to use gallium nitride (GaN) transmit/receive modules.