View source for SCR-270

==Overview==
The SCR-270 was one of the first operational early warning radars. It was the U.S. Army's primary long-distance radar throughout World War II and was deployed around the world. It is also known as the Pearl Harbor Radar, since it was a SCR-270 set that detected the incoming raid about half an hour before the attack commenced.


Two versions were produced, the mobile SCR-270, and the fixed SCR-271 which used the same electronics but used an antenna with somewhat greater resolution. 


[[File:SCR-170.jpg|400px]]
==components==
* [[BC-785]] transmitter
* [[BC-405]] transmitter
* [[BC-404]] receiver
* [[BC-402]] keyer
* [[BC-424]] modulator
* [[BC-758]] keying unit
* [[BC-403]] oscilliscope
* [[BC-439]] freq. meter
* [[BC-736]] reducer
* [[BD-99]]
* [[BC-1011]]
* [[BC-1012]]
* [[BD-111]] power distribution panal
* [[PE-74]] gen-set
* [[AN-118-A]] antenna
* [[AN-140]] antenna
* [[AN-161]] antenna
* [[K-22 trailer]]
* [[K-64 trailer]]
* [[K-30 truck]]
* [[K-31 truck]]
* [[K-62 truck]]
* [[RC-70]], test set
* [[MC-298]] kit

==Related Files==
* TM 11-1100 Radio Set SCR-270-B. War Dept. Dec. 1942. 60 p. U408.3.A13 TM 11-1100 Dec. 1942

* TM 11-1310 Technical Operation Manual Operating Instructions, Equipment Performance Log, and Corrective Measures For Radio Sets SCR-270-B, -C, -D, -E, -BA, -CA, SCR-271, -A, -AA, -AAA, -AB, -B, -BA, -D, -E, -F, -G, -H, -J, -K, -L, -M. War Dept. Sep. 1944. 66 p. U408.3.A13 TM 11-1310 Sep. 1944


;{{pdf|TM-11-1510.pdf|TM 11-1510}}
:War Department Technical Manual
::SERVICE MANUAL FOR RADIO SETS 
::SCR -270-B,-C,-D,-E,-BA, -CA, 
::SCR-271, -A,-AA, -AAA,-AB,-B,-BA,-D,-E,-F,-G,-H,-1,-K,-L, AND -M.
::25 August 1944



;{{pdf|TM-11-1410.pdf|TM 11-1410}}
:Preventive Maintenance Manual
::RADIO SETS 
::SCR-270-BJ, -C, -D, -E, -BA, -CA, 
::SCR-271, - A, -AA, -AAA, -AB, -B, -BA, -D, -E, -F, -G, -H, -J, -L, -LA
::21 June 1944


[[Category:Military/Radars]]