R900

• Country
• Great Britain (UK)

• Manufacturer / Brand
• Roberts Radio Co.Ltd., East Molesey, Surrey, UK

• Year
• 1985–1990

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 90168

• Picture
• Schematics

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

• Number of Transistors
• 2

• Semiconductors
• 2SC1815 2SC2120 TA7358 TDA1220 TDA1905

• Main principle
• Superheterodyne (common); ZF/IF 468/10700 kHz

• Wave bands
• Broadcast, Long Wave and FM or UHF.

• Power type and voltage
• Line / Batteries (any type) / 240 / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 11.4 cm = 4.5 inch

• Power out
• 1.5 W (undistorted)

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

• from Radiomuseum.org
• Model: R900 - Roberts Radio Co.Ltd., East

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

• Dimensions (WHD)
• 12.25 x 6.5 x 3.75 inch / 311 x 165 x 95 mm

• Notes

• Max. Power Output (THD 10%):
  Batt: 1.5W, Mains: 4W

  6.35mm headphone socket

  Aux 5 pin DIN socket

• Source of data
• -- Original-techn. papers.

• Mentioned in
• - - Manufacturers Literature (1st Page of Service Manual)

• Author
• Model page created by Howard Craven. See "Data change" for further contributors.

• Other Models

• Here you find 100 models, 96 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Roberts Radio Co.Ltd., East Molesey, Surrey, UK