• Country
• Great Britain (UK)

• Manufacturer / Brand
• Cossor, A.C.; London

• Year
• 1942–1946

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 165322

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

• Number of Tubes
• 8

• Valves / Tubes
• 5Z4G SU2150A 6J5G OM5 OM5 807 807 09D or 09J or 09G or 26J

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 200-250 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Double Beam Oscillograph 339 - Cossor, A.C.; London

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 220 x 340 x 490 mm / 8.7 x 13.4 x 19.3 inch

• Notes

• The Cossor Model 339 Double Beam Oscillograph is an oscilloscope with a 4.5" double beam 09 type cathode ray tube that could without any modification be replaced with a 26 type single beam CRT.

  The instrument was delivered with 09J (blue) CRT as standard, but it could be fitted with the a 09D (green) or 09G (blue-green with 10 sec. green afterglow) type CRTs.

  The dual beam and single beam tubes were directly interchangable; the two vertical amplifiers working in push-pull for the single beam. One channel showed an inverted image when using the dual beam tube.

  For photographic recording, Model 427 Camera could be used.

  The Model 339 is based on the pre-war Model 3339 which used different valves.

  There were intermediate versions between the 3339 and 339 models. For example, some of the later 3339 were also fitted with the front panel switch and indicator lamp.

• Net weight (2.2 lb = 1 kg)
• 20 kg / 44 lb 0.8 oz (44.053 lb)

• Price in first year of sale
• 45.00 GBP

• Source of data
• - - Manufacturers Literature

• Mentioned in
• - - Manufacturers Literature (Cossor Handbook December 1942)

• Literature/Schematics (1)
• Wireless World (The), London (WW, 79) (Dec. 1944, p.16 + Oct. 1946, p.10)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 326 models, 250 with images and 194 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Cossor, A.C.; London