SW-3 Model I (2VDC SW-3) var 2
National Company; Cambridge & Malden (MA)
- 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
- 49539
-
- alternative name: National Toy Co.
- Brand: Thrillbox
- Number of Tubes
- 3
- Main principle
- TRF with regeneration
- Wave bands
- Broadcast, Long Wave and Short Wave.
- Power type and voltage
- Dry Batteries / 1,4 / 3/67/135 Volt
- Loudspeaker
- - For headphones or amp.
- Material
- Metal case
- from Radiomuseum.org
- Model: SW-3 Model I [var 2] - National Company; Cambridge &
- Shape
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 250 x 200 x 280 mm / 9.8 x 7.9 x 11 inch
- Notes
- The National SW-3 Model I (2VDC SW-3) uses plug-in coils series "10-22" for coverage 90 - 35000 kHz. Headphones operation only, no audio output stage. The National 2V DC SW-3 is the Direct Current version of the National SW-3. It uses different tubes, but basically the same circuit as the 6V DCSW-3 (6 volt DC version) or the ACSW-3 (the 110VAC version).
- Net weight (2.2 lb = 1 kg)
- 5.4 kg / 11 lb 14.3 oz (11.894 lb)
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 14 = 1944 = before 1943
- 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)
Collections
The model is part of the collections of the following members.