• Country
• United States of America (USA)

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

• Year
• 1933–1935

• Category
• Amateur-Receiver (amateur bands, may include broadcast bands)

• Radiomuseum.org ID
• 85118

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

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

• Number of Tubes
• 3

• Valves / Tubes
• 236 237 89

• Main principle
• TRF with regeneration

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Powered by external power supply or a main unit. / 6 / 180 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Super-Regenerative Receiver SRR - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 7.75 x 7 x 7.75 inch / 197 x 178 x 197 mm

• Notes

• The National SSR receiver utilizes a single plug-in coil for bands. It covers the 5 meter (56-60 MHz) former amateur band with supplied coil. Optional coils for the 10, 20, 40, 80 and 160 meter amateur bands were available. ($1.25 US each). The National 5886-AB power supply was also available as an acessory. The SRR has a National B Dial for tuning.

• Net weight (2.2 lb = 1 kg)
• 8.25 lb (8 lb 4 oz) / 3.746 kg

• Price in first year of sale
• 29.50 USD

• Mentioned in
• National Catalog No. 220 - 1933

• Literature/Schematics (1)
• Short Wave Craft July 1933 pages 151, 175 and 187

• 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)