77B

Cossor, A.C.; London

Data
Forum
Pictures
Collections

  • Year
  • 1942
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 78791

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 200-250 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 20 cm = 7.9 inch
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: 77B - Cossor, A.C.; London
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 14.5 x 18.5 x 10 inch / 368 x 470 x 254 mm
  • Notes
  • Valves/Tubes used in this model: 41STH (frequency changer) MVS/PenB (IF amplifier) DDT (det./AGC diodes, AF triode) 2P (output triode) 431U (rectifier) The 2P output valve is a type developed to circumvent the wartime restrictions on output valve power and has an anode dissipation of exactly ten Watts, the maximum allowed without obtaining a special permit. See also the wooden cabinet version of the Cossor 77.

 Collections | Museums | Literature

Collections

The model is part of the collections of the following members.

 Forum

Forum contributions about this model: Cossor, A.C.; London: 77B

Threads: 1 | Posts: 1

Valves/Tubes used in this model:
41STH (frequency changer)
MVS/PENB (IF amplifier)
DDT (det./AGC diodes, AF triode)
2P (output triode)
43IU (rectifier)

The 2P output valve is a type developed to circumvent the wartime restrictions on output valve power and has an anode dissipation of exactly ten Watts, the maximum allowed without obtaining a special permit.

The loudspeaker is a 20cm dia. electrodynamic type.

Mike Izycky, 03.May.05

Weitere Posts (1) zu diesem Thema.