• Country
• United States of America (USA)

• Manufacturer / Brand
• National Electric Signaling Co. (NESCO) or Supply; Washington, D.C.

• Year
• 1918

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 103741

• • alternative name: National Electric Signaling Co. || National Electrical Supply Co.

• Main principle
• Special principle (see notes)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Crystal Detector Receiver SE143 - National Electric Signaling Co

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 23 x 14 x 12 inch / 584 x 356 x 305 mm

• Notes
• Crystal Receiver / reactive tuner (if used with vacuum tube). Tunes 250···3.000 m (100 kHz···1,2 MHz), battery operated buzzer for setting the crystal. External detector (crystal or tube). Made for "bureau of steam engineering". Similar IP-500 made by Wireless Specialty. McMahon qoutes wider tuning range of 150 to 6800 metres (possibly for IP-500 only?).

• Price in first year of sale
• 425.00 $

• Source of data
• -- Collector info (Sammler)

• Mentioned in
• Vintage Radio 1887-1929, Greenwood's Classic Pictorial Album

• Author
• Model page created by John Koster. See "Data change" for further contributors.

• Other Models

• Here you find 31 models, 29 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Electric Signaling Co. (NESCO) or Supply; Washington, D.C.