• Country
• United States of America (USA)

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

• Year
• 1938–1941

• Category
• Amateur Transmitter (only)

• Radiomuseum.org ID
• 285901

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

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

• Number of Tubes
• 10

• Valves / Tubes
• 6L6G 6L6G 6L6G 6L6G 6C6 76 or 56 76 or 57 2A3 2A3 83

• Wave bands
• Wave Bands given in the notes.

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

• Loudspeaker
• - - No sound reproduction output.

• Power out
• 10 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Exciter - Speech Amplifier NTE-A - National Company; Cambridge &

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

• Notes

• The National NTE-A Exciter and Speech Amplifier covers the amateur bands of 5, 10, 20 and 80 meters. It came standard with black wrinkle finish, but was available in black leatherette and gray finish for an additional charge. Delivers 10W output power. It is also a component of The National 600 Watt Transmitter.

  Note the two versions of the schematic. The one with the type 76 tubes is from a QST article, and the one with the 56 and 57 tubes is from the National manual for the 600 Watt Transmitter.

• Net weight (2.2 lb = 1 kg)
• 70 lb (70 lb 0 oz) / 31.780 kg

• Price in first year of sale
• 215.00 USD

• Mentioned in
• QST March 1938 page 24

• Literature/Schematics (1)
• National Catalog 1941 page 14

• Literature/Schematics (2)
• QST May 1937 page 24

• Author
• Model page created by Wayne Childress. 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)