• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1939 ?

• Category
• Military Receiver

• Radiomuseum.org ID
• 174858

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 6

• Valves / Tubes
• VT-131 or 12SK7 VT-132 or 12K8 VT-131 VT-131 VT-133 or 12SR7 VT-134 or 12A6

• Main principle
• Superhet with RF-stage; ZF/IF 1415 kHz; 1 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Storage and/or dry batteries / 24-28 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: BC-454 /SCR-274N - MILITARY U.S. different makers

• Shape
• Rack

• Dimensions (WHD)
• 125 x 140 x 300 mm / 4.9 x 5.5 x 11.8 inch

• Notes

• This compact aircraft-receiver, part of SCR-274N, covers frequency 3.0 to 6.0 MHz AM/CW. Control is local or remote. At the front there is a small mounting-plate which is bare in case of remote control, or which contains a volume-control, a switch on/off and a switch AM/CW.

  In case of remote control, there is no dial knob but a bowden-cable is connected.

  Power supply by dynamotor DM-32, mounted at the back of the receiver.

  The suffix -A or -B to the name BC-454 means a different output-transformer with an audio-output of 8000 ohms for the -A variant and 8000/600 ohms for the -B variant.

• Net weight (2.2 lb = 1 kg)
• 3.9 kg / 8 lb 9.4 oz (8.59 lb)

• Source of data
• -- Original-techn. papers.

• Mentioned in
• -- Original-techn. papers.

• Literature/Schematics (1)
• -- Other type before this -same/similar characteristics - see exchange.

• Author
• Model page created by Jan Terranea. See "Data change" for further contributors.

• Other Models

• Here you find 399 models, 351 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)