• Country
• Great Britain (UK)

• Manufacturer / Brand
• Kolster Brandes Ltd. (KB, K.B., ITT); Foots Cray; GB

• Year
• 1963

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 126236

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 9

• Semiconductors
• AF117 Y159 AF117 OC70 2G309 OC75 OC81D OC81 AC127

• Main principle
• Superheterodyne (common); ZF/IF 470 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• Power out
• 0.5 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Calypso WP31 - Kolster Brandes Ltd. KB, K.B.,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 10 x 7.5 x 3.5 inch / 254 x 191 x 89 mm

• Notes

• Transistors: 2x AF117(2G417), OC70(2G317), 2G309, OC75(2G374), OC81D(2G374B), OC81(2G381), AC127(2G339).
  Transistor Y159 is only used for its diode function.

  Fitted with baby alarm/telephone socket

  Optional extras;
  Microphone and 50 feet of cable, £1.5
  Telephone adaptor, £1.05

  Same chassis and circuit as KB Lyric WP21

  Dates and prices from Radio! Radio! 3rd Edition 1996

• Net weight (2.2 lb = 1 kg)
• 1.5 kg / 3 lb 4.9 oz (3.304 lb)

• Price in first year of sale
• 5.75 GBP

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Anthony Alston. 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