• Country
• United States of America (USA)

• Manufacturer / Brand
• National Company; Cambridge & Malden (MA)

• Year
• 1942 ?

• Category
• Military Receiver

• Radiomuseum.org ID
• 89983

• • alternative name: National Toy Co.
  • Brand: Thrillbox

• Number of Tubes
• 7

• Valves / Tubes
• 6SK7 6SK7 6SK7 6SG7 6H6 6K6GT 5U4G

• Main principle
• TRF with regeneration

• Wave bands
• Long Wave and/or Very Low Frequency (VLF).

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: RBL-3 CWQ-46161-A - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Notes
• longwave receiver covering 15 - 600 kHz;
  TRF receiver with regenerative detector used by US Navy in marine communications;
  production under contract by Wells Gardner

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 445 models, 284 with images and 189 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Company; Cambridge & Malden (MA)