- Country
- Great Britain (UK)
- Manufacturer / Brand
- Kolster Brandes Ltd. (KB, K.B., ITT); Foots Cray; GB
- Year
- 1948
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 248153
Image from original KB Portfolio
image from ebay acution
image from ebay auction
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- Superheterodyne (common); ZF/IF 470 kHz
- Wave bands
- Broadcast (MW) and Long Wave.
- Power type and voltage
- Alternating Current supply (AC) / 200 - 250 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Power out
- 2 W (unknown quality)
- Material
- Catalin (a brand name for a thermosetting polymer popular in the 1930s and 1940s - a phenol formaldehyde resin - like Bakelite, but a two-stage process with a lot of work afterwards).
- from Radiomuseum.org
- Model: BW20 - Kolster Brandes Ltd. KB, K.B.,
- Shape
- Miscellaneous shapes - described under notes.
- Notes
-
Small cabinet designed for wall mounting. Tropicalised for use in humid conditions such as a kitchen.
Same chassis/circuit as BM20 & BM30.
For service information see KB BM20
- Author
- Model page created by Mike Edwards † 25.10.21. See "Data change" for further contributors.
- Other Models
-
Here you find 415 models, 372 with images and 253 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Kolster Brandes Ltd. (KB, K.B., ITT); Foots Cray; GB