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Revival (retro model) R250

Revival R250; Roberts Radio Co.Ltd (ID = 1494630) Radio
Revival R250; Roberts Radio Co.Ltd (ID = 1104195) Radio Revival R250; Roberts Radio Co.Ltd (ID = 1104196) Radio
Revival R250; Roberts Radio Co.Ltd (ID = 1494625) Radio Revival R250; Roberts Radio Co.Ltd (ID = 1494626) Radio
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Revival R250; Roberts Radio Co.Ltd (ID = 1104195) Radio
Roberts Radio Co.Ltd: Revival R250 [Radio] ID = 1104195 640x480
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For model Revival (retro model) R250, Roberts Radio Co.Ltd., East Molesey, Surrey, UK
 
Country:  Great Britain (UK)
Manufacturer / Brand:  Roberts Radio Co.Ltd., East Molesey, Surrey, UK
Year: 2008 ? Type: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) BA4424N BA4236 TDA7231
Principle Superhet with RF-stage
Wave bands Broadcast, Long Wave and FM.
Details
Power type and voltage Line / Batteries (any type) / 230 / 4 x 1,5 (LR20) Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3 inch = 7.6 cm
Power out 0.8 W (1 W max.)
from Radiomuseum.org Model: Revival R250 - Roberts Radio Co.Ltd., East
Material Leather / canvas / plastic - over other material
Shape Portable set > 8 inch (usable without mains)
Dimensions (WHD) 238 x 155 x 98 mm / 9.4 x 6.1 x 3.9 inch
Notes

Bemerkenswert ist, dass dieses Gerät - äußerlich im  Stil der 50er - keine diskreten Halbleiter aufweist. Die gesamte Empfängerschaltung ist mit 3 ICs realisiert:

  1. BA4424N: FM-Signalaufbereitung: HF-Vorverst., Oszillator und Mischer, ZF-Vorverstärker
  2. BA4236L: FM-ZF-Verstärker und Quadratur-Demodulator, AM-Oszillator, -Mischer und ZF-Verstärker, Demodulator und AGC.
  3. TDA7231: NF-Vorverstärker und Endstufe.

This radio while reminiscent of the 1950s Roberts doesn't actually match any earlier model. The entire receiver circuit is realized with 3 ICs:

  1. BA4424N: FM Signal Processing: RF preamplifier, mixer and oscillator, IF preamplifier.
  2. BA4236L: FM IF amplifier and quadrature demodulator, AM oscillator, mixer and IF amplifier, demodulator and AGC.
  3. TDA7231: AF preamp and power amp.

The loudspeaker is smaller than 1950s Roberts in a similar cabinet.

 

Net weight (2.2 lb = 1 kg) 1.180 kg / 2 lb 9.6 oz (2.599 lb)
Price in first year of sale 169.00 EUR
Source of data - - Manufacturers Literature

Model page created by Jean-noël Delizee. See "Data change" for further contributors.

All listed radios etc. from Roberts Radio Co.Ltd., East Molesey, Surrey, UK
Here you find 63 models, 57 with images and 35 with schematics for wireless stes etc. French TSF for Télégraphie sans fil.


  
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