====== Radio Receiver BC-314 ======
Produced for the U.S. Signal Corps by various manufacturers.

The BC-314 is a VLF variant of the [[BC-224]] receiver, it covers the long- und mediumwave range from 150 - 1500 kHz in four bands.

===== Technical data =====
  * [[Principle]]: [[single conversion superhet]], [[IF]] 92.5 kHz
  * [[Operation modes]]: [[A1]] with BFO, [[A3|AM (A3)]]
  * [[Frequency range]]: 150 - 1500 kHz
  * [[Frequency display]]: [[analogue dial]]
  * [[Frequency memory]]: none
  * [[Signal strength indicator]]: none
  * [[Signal processing]]: 
  * [[Features]]: 
  * [[Sensitivity]]: [[A3|AM (A3)]] / [[Selectivity]]: kHz (-6/-60 dB)

==== Power supply ====
  * [[Batteries]]: 12 V DC from vehicle electrical system, DM-21 dynamotor to generate the plate voltage.

==== Dimensions ====
  * 460 x 254 x 231 mm, weight 29.4 kg

==== Accessories ====

----

===== Operation =====

===== Variants =====
{{tablelayout?colwidth="80px,-,80px,90px,85px,-,-"}}
^Type^Manufacturer^Voltage^Heated Oscillator^Noise Bal. System^Quartz - Filter^Comments^
|BC-314-_| |12 - 14V DC|X|X|X|Dynamotor DM-21 (50 - 60W)|
|BC-314-C| |12 - 14V DC|-|-|-| |
|BC-314-D| |12 - 14V DC|-|-|-| |
|BC-314-E| |12 - 14V DC|-|-|-|Antenna relay connects G1 of the first audio stage to ground for break-in operation|
|BC-312-F| |12 - 14V DC|-|-|-|Antenna relay connects G1 of the first audio stage to ground for break-in operation|
|BC-312-G| |12 - 14V DC|-|-|-|Antenna relay connects G1 of the first audio stage to ground for break-in operation|

{{tablelayout?colwidth="80px,-,80px,90px,85px,-,-"}}
^Type^Manufacturer^Voltage^Heated Oscillator^Noise Bal. System^Quartz - Filter^Comments^
|BC-344-_| |110 - 120V AC|X|-|-|Rectifier RA-20 (75W)|
|BC-344-D| |110 - 120V AC|-|-|-| |

===== Technical principle =====
[[single conversion superhet]]

==== Components ====
The set is equipped with tubes: [[de:6K7]], [[de:6K7]], [[de:6L7]] (or 6L7G), [[de:6C5]], [[de:6K7]] or (6K7GT), [[de:6K7]] (or 6K7GT), [[de:6C5]], [[de:6R7]] (or 6R7GT), [[de:6F6]]

===== Technical documentation =====

==== Development ====
In 1936, the Radio Corporation of America (RCA) developed the [[BC-224]], an aircraft receiver that covered the shortwave range in six bands and was powered by the on-board voltage of 14V.

In 1939, a set covering four VLF / medium wave bands was released.

{{gallery>:images?mil-usa-bc314*.jpg&0&80x80&lightbox&showtitle&titlesort}}
==== Further information ====
  * [[https://www.radiomuseum.org/r/military_receiver_bc_314.html|Radio Receiver BC-314 on the website of www.radiomuseum.org]]