Airflo 491
Radio Instruments Ltd (RI)., London
- Country
- Great Britain (UK)
- Manufacturer / Brand
- Radio Instruments Ltd (RI)., London
- Year
- 1947/1948
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 217782
- Number of Tubes
- 4
- Main principle
- Superhet, IF regeneration; ZF/IF 450 kHz; 2 AF stage(s)
- Tuned circuits
- 2 AM circuit(s)
- Wave bands
- Broadcast, Long Wave and Short Wave.
- Power type and voltage
- Alternating Current supply (AC) / 210-250 Volt
- Loudspeaker
- Permanent or electro-dynamic (moving coil), system not known yet. / Ø 15 cm = 5.9 inch
- Power out
- 3 W (unknown quality)
- Material
- Wooden case
- from Radiomuseum.org
- Model: Airflo 491 - Radio Instruments Ltd RI.,
- Shape
- Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
- Dimensions (WHD)
- 520 x 300 x 300 mm / 20.5 x 11.8 x 11.8 inch
- Notes
- All tubes are Mazda metallized type.
- Net weight (2.2 lb = 1 kg)
- 8 kg / 17 lb 9.9 oz (17.621 lb)
- Literature/Schematics (1)
- Trader Service Sheet (suppl. of Wireless & El. Trader, etc.)
- Author
- Model page created by Mihály Horn. See "Data change" for further contributors.
- Other Models
-
Here you find 48 models, 42 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Radio Instruments Ltd (RI)., London