• Country
• United States of America (USA)

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

• Year
• 1942–1945 ?

• Category
• Military Receiver

• Radiomuseum.org ID
• 90007

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

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

• 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) / 117 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: RBL-5 CNA-46161-B - National Company; Cambridge &

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 17.2 x 10.7 x 16.6 inch / 437 x 272 x 422 mm

• Notes

• The National RBL-5 is a longwave receiver, covering 15 - 600 kHz in six bands. It is a TRF receiver with regenerative detector. It was used by US Navy in marine communications (Navy designation CNA-46161B). There was an optional 6-volt vibrator pack (CNA-20214) availavable, as well as the ability to use external batteries.

  Band	Frequency
  A	15 - 25 KHz
  B	25 - 45 KHz
  C	45 - 80 KHz
  D	80 - 155 KHz
  E	155 - 310 KHz
  F	310 - 600 KHz

• Net weight (2.2 lb = 1 kg)
• 75 lb (75 lb 0 oz) / 34.050 kg

• Source of data
• Communications Receivers

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

• Other Models

• Here you find 446 models, 285 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)