AN/CRN-2
The radio set AN/CRN-2 was an air transportable glide path transmitter used by the Army Air Force during and after World War II, the set was standardized on 5 February 1944. and was an upgrade of SCR-592.
Use
Signals from the transmitter are received by the pilot of the aircraft, over the AN/ARN-5 receiving equipment. which provides visual indication of the proper course of descent in the vertical plane during instrument landing operation. At an altitude of 3,000 feet it provides a straight-line glide path course with good definition from a minimum distance of 15 miles from the point of landing contact with the ground. The angle indicated between the horizontal and the glide path is readily adjustable between 2 and 5 degrees.
- The trailer is located 750 feet from the approach end of the runway, and 400 feet to one side, or the other, of the runway centerline.
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Statistics
The equipment operates in the frequency range of 329 to 335 Mc. power output is 25 Watts of CW power. the signal is a straight line glide path-double beam MCW Modulated continuous wave system. the range is 15 miles at 3,000 feet.
Components
The transmitting components were mounted on an air transportable trailer (the V-1), power is provided by a PE-120 Generator (115 volts) and PP-29 Rectifier. Total weight is 1800 Lbs.
- An SCR-610 is provided for ground communications
Aircraft component
The AN/ARN-5 consists of antenna system
- AS-27A (combination) and or antenna system
- AS-61. (glide path only) and radio receiver R-89 or R-57.
See also
- SCR-277
- AN/MRN-1
- AN/MRN-2
- AN/MRN-3
- Signal Corps Radio
- List of U.S. Signal Corps vehicles
- Radio navigation
- Instrument landing system
- LORAN
- SHORAN
- List of military electronics of the United States
References
- TM 11-227 Signal Communication Directory. dated 10 April 1944
- TM 11-487 Electrical Communication systems Equipment. dated 2 October 1944
- Graphic Survey of Radio and Radar Equipment Used by the Army Airforce. section 3 Radio Navigation Equipment Dated May 1945
External links
- http://aafcollection.info/items/documents/view.php?file=000149-01-03.pdf TO 30-100F-1 1943
- http://www.designation-systems.net/usmilav/jetds/an-c.html
- https://books.google.com/books?id=FHi5wRMtQ2QC&pg=PA108&lpg=PA108&dq=glide+path+transmitter&source=bl&ots=KULcyUnE2S&sig=Yv6hs0cIfEH13iimHHUyl8gER9c&hl=en&ei=aE_GSp66Js7d8QabiNhG&sa=X&oi=book_result&ct=result&resnum=10#v=onepage&q=glide%20path%20transmitter&f=false
- https://web.archive.org/web/20080828215101/http://jptronics.org/radios/Military/JANAP161/an.ac/an.arc-type.rc-103.pdf data sheet