• Country
• United States of America (USA)

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

• Year
• 1932

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 49554

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

• Number of Tubes
• 9

• Valves / Tubes
• 236 236 236 236 237 237 237 237 238

• Main principle
• Superheterodyne (common); ZF/IF 500 kHz

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Alternating Current supply (AC) / 6 / 170 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Aeronautical Ground Station AGS - National Company; Cambridge &

• Shape
• Rack

• Notes
• coverage 2400 - 20000 kHz, plug-in coils, National round "N" dial;
  AM / CW(with BFO), MVC/AVC;
  developed as "Aeronautical Ground Station" for aircraft communications;
  matching power supply 5886AB, matching rack power supply GRDPU for one AGS and one 58C set,
  matching rack permanent dynamic speaker RFS, matching coil rack panel CRP (receptacle for 12 coils not in use)

• External source of data
• Ernst Erb

• Source of data
• Communications Receivers

• Circuit diagram reference
• Rider's Perpetual, Volume 3 = 1933 and before

• 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)