• Country
• United States of America (USA)

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

• Year
• 1932 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49618

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

• Number of Tubes
• 5

• Valves / Tubes
• 34 34 30 31 31

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Dry Batteries / 2 / 3/22,5/67,5/135 Volt

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: SW-34 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Notes
• four shortwave + three optional medium wave plug-in coils (same as SW-5): 15,5-26,6 m / 23,5-41 m / 37,5-65 m / 64-115 m (1,7 - 20 MHz) optional plug-in coils 110-175 m / 170-300 m / 290 - 570 m (2727 - 526 kHz),
  new linear dial instead of vertical drum dial found in the original SW-5

• Price in first year of sale
• 85.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• 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)