SCR-299 explained
The SCR-299 was a U.S. Signal Corps mobile military communications unit used during World War II.
History
The SCR-299 "mobile communications unit" was developed to provide long-range communications during World War II. The US Military sought improvements of range, flexibility and durability over its existing SCR-197 and SCR-597 transmitters. In 1942, Hallicrafters Standard HT-4 was selected as the SCR-299's transmitter, known subsequently by its military designation as the BC-610. The SCR-299 was first used on 8 November 1942 during Operation TORCH involving companies of the 829th Signal Service Battalion establishing a radio net that could exchange messages between beach-landed forces and bases in Gibraltar. Despite initial problems unloading the sets from convoy ships, the SCR-299s served until the installation of permanent Army Command and Administrative Network stations.[1] According to US Army military historians, "General Dwight Eisenhower credited the SCR-299 in his successful reorganization of the American forces and final defeat of the Nazis at Kasserine Pass."[2]
The range of the SCR-299 exceeded original specifications, sometime establishing contact over 2300miles.[3]
The SCR-299 provided reliable communications with England during the North African campaign, and in Normandy on D-Day, served as a connection between two airborne divisions with Britain.[4] The SCR-299 was also used in the invasion of Sicily and the Allied invasion of Italy.[2]
War correspondents and press reporters frequently made use of the SCR-299 and SCR-399. Access to the sets was provided to them by US Second Army and US Third Army Group Communications Teams, and in one instance, the SCR-399 became the only means of getting press copy direct to London.[5]
In 1944, a short subject film was produced by the Jam Handy Organization and sponsored by the Hallicrafters Company that showed the construction of the SCR-299 and dramatized its use during World War II.[6] [7]
Hallicrafters Company advertising of the period sometimes used illustrations of the shelter-mounted SCR-399 to describe the achievements of the SCR-299.[8]
Specifications
- Transmitter: BC-610 plus BC-614 (speech amplifier), BC-729 (tuning unit) and BC-211 (frequency meter)
- Transmitter output power: 350 watts.
- Receivers: BC-312 and BC-342
- Frequency coverage: HF from 2 to 8 MHz (and 1–18 MHz using conversion kits)
- Power supply: 2000 watts, with additional 1500 watts for heater and lights supplied by PE-95 (power unit) on K-52 "Ben-Hur" style trailer. Optional 12 volt storage battery, or 115 volt 60 cycle AC commercial power and two spare 6 volt storage batteries
- SCR-299 housing: K-51 van truck
- SCR-399 housing: HO-17 shelter mountable on 2-ton trucks.
- SCR-499 housing: air-transportable
- Frequency Conversion Kit MC-503: coverage down to 1 MHz.
- Frequency Conversion Kit MC-516: coverage to 12 MHz
- Frequency Conversion Kit MC-517: coverage to 18 MHz.
- Antennas: 9feet whip antenna (receiver), 15feet whip antenna (transmitter). Optional 21feet whip antenna while stationary or 45feet auxiliary wire antenna for 2.0 to 4.5 MHz coverage.[9]
- Remote control: field telephones, control boxes and cable.[10] [11]
See also
References
External links
Notes and References
- http://assets.mediaspanonline.com/prod/1857873/fhs_01222009A20.pdf Fort Huachuca Scout, 22 January 2009. Signal Corps carries the Torch, by Kristen Gregan, NETCOM Historical Staff
- http://www.gordon.army.mil/ocos/ac/WWII/SCR299.asp The SCR-299, United States Army Signal Center, Fort Gordon, GA
- http://www.gordon.army.mil/ocos/ac/WWII/SCR299.asp The SCR299, Army Communicator United States Army Signal Center, Fort Gordon, GA
- Web site: The Library of Congress World War II Companion. David M.. Kennedy. 2 October 2007. Simon and Schuster. Google Books.
- Web site: Normandy - The Technical Services : Signal Corps.
- Web site: Voice of Victory (Part I). Handy (Jam) Organization. 1 January 1944. Internet Archive.
- Web site: Voice of Victory (Part II). Handy (Jam) Organization. 1 January 1944. Internet Archive.
- Dachis, Chuck (1996). Radios By Hallicrafters. Schiffer Publishing, Atglen (USA).
- http://www.gordon.army.mil/OCOS/Museum/ScrComponents/scrPart2.asp Directory Of Components, The SCR299, Army Communicator United States Army Signal Center, Fort Gordon, GA
- http://www.gordon.army.mil/ocos/Museum/AMC/radio2.asp Fort Gordon Museum, Transportable Sets
- http://www.gordon.army.mil/ocos/museum/scrcomponents/scrPart2.asp Fort Gordon Museum