- United States of America (USA)
- Manufacturer / Brand
- National Company; Cambridge & Malden (MA)
- Amateur Equipment (Other, but not Key)
- Radiomuseum.org ID
- alternative name: National Toy Co.
- Brand: Thrillbox
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- Wave bands
- - without
- Power type and voltage
- Alternating Current supply (AC) / 105-125 Volt
- - - No sound reproduction output.
- Metal case
- from Radiomuseum.org
- Model: Modulator NSM - National Company; Cambridge &
- Boatanchor (heavy military or commercial set >20 kg).
The National NSM modulator was specifically designed to be paired with the National NTX-30 transmitter. Frequency response is flat from 50 to 10,000 cycles.
- Price in first year of sale
- 130.00 USD
- Mentioned in
- National Company 1941 Catalog page 15
- Model page created by Wayne Childress. See "Data change" for further contributors.
- Other Models
Here you find 430 models, 278 with images and 165 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from National Company; Cambridge & Malden (MA)