FS36

Invicta Radio Ltd.; Cambridge, London

Data
Forum
Pictures
Collections

  • Year
  • 1937 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 251260

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 2 AF stage(s)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 2 & 9 & 60 & 120 or 150 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: FS36 - Invicta Radio Ltd.; Cambridge,
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 345 x 450 x 225 mm / 13.6 x 17.7 x 8.9 inch
  • Notes

  • Virtually identical cabinet to Invicta 420 (seems to be same chassis).

    Unusually for a battery model there is a scale lamp. V1 is a Hexode with RF gain via g1 bias.

    Two aerial sockets (no internal aerial), one has a 200kHz "Droitwich" trap/rejector as well as earth socket.

    Lead Acid Accumulator for LT. 2V and at least 20AH (45AH was common)

    Grid bais is Winner 9 or similar as it needs more than one bias and must be adjustable, or an HT pack with multiple 1.5V grid bias taps to -9V. (-1 for driver and output valve is -4.5 or -6 120V HT and -7.5 or -9V on -150V HT)

    HT is +60V and +120 or +150V (A Portable 32 would provide this and the Grid Bias Taps). A Winner 120 provides 60 & 120 (either older or later version).

  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum