The SCR-245 Radio was a mobile
MF/
HF Signal Corps Radio
Signal Corps Radios were U.S. Army military communications components that comprised "sets". Under the Army Nomenclature System, the abbreviation SCR initially designated "Set, Complete Radio", but was later misinterpreted as "Signal Corps Radio ...
used by the
U.S. Army
The United States Army (USA) is the primary land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of the United Stat ...
before and during
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, for short range ground communications, It was one of the first
crystal controlled sets used by the Army.
Use
The SCR-245 was standardized on 10 June 1937, and used by Armored forces for command and control of tank units. It replaced the earlier
SCR-189 and was used primarily in the early M2, M3 light tanks as well as the early M3 medium tanks. Their large size required them to be mounted in the tanks
sponson
Sponsons are projections extending from the sides of land vehicles, aircraft or watercraft to provide protection, Instantaneous stability, stability, storage locations, mounting points for weapons or other devices, or equipment housing.
Watercra ...
s. It was replaced by the
SCR-508
The SCR-508 radio was a mobile Signal Corps Radio used by the U.S. Army during World War II, for short range ground communications. The SCR-508 series radio represented the Army's commitment to both FM and crystal tuning, and was used extensively ...
sets.
Components
* BC-223 Transmitter
**Modes: AM, CW.
**Frequency range: 4
crystal-controlled channels, 2.0 MHz to 4.5 MHz.
**RF Power output: 10 Watts.
**Range: CW 45 Miles. Voice 20 Miles.
* BC-312 Receiver (See
BC-342)
* PE-55 Dynamotor (12Volt input)
* MP14 or MP37 mast base and 15 foot whip antenna.
Variants
* SCR-210 Receiver only set
See also
*
Signal Corps Radio
Signal Corps Radios were U.S. Army military communications components that comprised "sets". Under the Army Nomenclature System, the abbreviation SCR initially designated "Set, Complete Radio", but was later misinterpreted as "Signal Corps Radio ...
*
Crystal oscillator
A crystal oscillator is an electronic oscillator Electrical circuit, circuit that uses a piezoelectricity, piezoelectric crystal as a frequency selective surface, frequency-selective element. The oscillator frequency is often used to keep trac ...
References
{{Reflist
General references
* TM 11-487 Electrical Communications Equipment
TM 11-227 APRIL 1944 Radio Communication Equipment (Directory)TM 11-272Radio to free Europe
External links
SCR List (archived)— US Army Signal Corps Museum
BC List— US Army Signal Corps Museum
Amateur radio transmitters
Military radio systems of the United States
World War II American electronics
Military electronics of the United States
Military equipment introduced in the 1930s