303

Ready Radio; Blackheath, London S.E.

Data
Forum
Pictures
Collections

  • Year
  • 1931 ?
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 251562

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 1 AF stage(s)
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 2 & 9 & 60/100 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 303 - Ready Radio; Blackheath,
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Notes

  • Complete kit including "cellophane wrapped case". Article published in a Ready Radio magazine (price 6d, supplied free!) for Meteor SG3 and 303.

    Construction uses metal strips (brass?) under a "valve platform" sub-board (Bakelite?) with valve sockets mounted on a metal chassis. Almost like a PCB.

    There are no dates in the magazine of 303 & Meteor SG3, but the PM12A is referred to as new this season. Some sources claim Mullard PM12A released 1932. The Permanent Magnet Moving Coil speaker suggests 1930+ rather than 1929.

    LT: 2V Lead Acid Accumulator, recommended Block or Pertrix Accumulator PAC2 8s 6d.

    HT: 100V (perhaps really 99V) using 60 or 70, 90 & 100V taps. Or 60V pack (all HT = 60V). Pertrix Ultra Capacity HT 100V C/N 272 13s, or Pertrix yellow carton C/N 402 9s. See Winner 120GB (price shows Winner 99).

    Grid Bias 9V pack with 1.5V taps, Pertrix yellow carton C/N 460 1s. See Winner 9.

    (1 shilling = £0.05, 1d = 1 pence = 1/240th of £)

  • Mentioned in
  • - - Manufacturers Literature (Ready Radio 303 , Meteor SG3 magazine, 16 pages + cover)
  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum