R404

• Country
• Great Britain (UK)

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

• Year
• 1965–1968

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 85979

• Picture
• Schematics

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

• Number of Transistors
• 7

• Semiconductors
• AF117 AF117 AF117 AC127 OC81D AC127 OC81

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

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

• Power type and voltage
• Dry Batteries / PP9: 2 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 6 inch = 15.2 cm

• Power out
• 1 W (unknown quality)

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

• from Radiomuseum.org
• Model: R404 - Roberts Radio Co.Ltd., East

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

• Dimensions (WHD)
• 280 x 170 x 100 mm / 11 x 6.7 x 3.9 inch

• Notes

• A battery powered portable seven transistor radio covering MW (183-570 metres) and LW (1120-2000 metres). Sockets for car aerial and earphone. Released March 1965, price complete with batteries £15 7s 7d plus Purchase tax. Optional carrying case £1 10s 0d plus Purchase tax.

• Net weight (2.2 lb = 1 kg)
• 1.9 kg / 4 lb 3 oz (4.185 lb)

• Literature/Schematics (1)
• - - Data from my own collection

• Literature/Schematics (2)
• Trader Service Sheet (suppl. of Wireless & El. Trader, etc.) (1706 dated 5 June 1965)

• Literature/Schematics (3)
• Radio And Television Servicing books (R&TVS)

• 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