- Country
- United States of America (USA)
- Manufacturer / Brand
- National Company; Cambridge & Malden (MA)
- Year
- 1947–1949 ?
- Category
- Amateur-Receiver (amateur bands, may include broadcast bands)
- Radiomuseum.org ID
- 87464
-
- alternative name: National Toy Co.
- Brand: Thrillbox
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 12
- Main principle
- Superhet with RF-stage
- Wave bands
- Broadcast, Long Wave and more than two Short Wave bands.
- Power type and voltage
- Alternating Current supply (AC) / 115 / 230 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 inch = 25.4 cm
- Power out
- 1.5 W (unknown quality)
- Material
- Metal case
- from Radiomuseum.org
- Model: HRO-7-C - National Company; Cambridge &
- Shape
- Rack
- Dimensions (WHD)
- 20.75 x 29 x 14.75 inch / 527 x 737 x 375 mm
- Notes
- HRO-7 receiver in cabinet rack with coil storage compartments, speaker and power supply
- Price in first year of sale
- 358.00 $
- Source of data
- Communications Receivers
- Mentioned in
- Shortwave Receivers - Past & Present (3rd ed.)
- Author
- Model page created by Martin Bösch. 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)