• Country
• Great Britain (UK)

• Manufacturer / Brand
• Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)

• Year
• 1960 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 120896

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

• Number of Tubes
• 18

• Valves / Tubes
• EM34 Z77 or EF91 or 6AM6 W77 or EF92 or 6F21 X79 or 6AE8 or 51 L77 or EC90 or CV133 Z77 W77 DH or EBC90 or 6AT6 Z729 W77 EM34 6BR7 or 8D5 or CV2135 Z77 Z77 6V6G 6V6G KT66 5V4

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 40-80 Hz, 115-230 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: Mimco Dynatron 2235 - Marconi Co. Marconiphone,

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 25.5 x 19 x 13.5 inch / 648 x 483 x 343 mm

• Notes

• Mimco all-wave marine broadcast receiver.

  A receiver designed especially for use in all classes of sea-going vessels, from passenger liners to trawlers, so that broadcast programs may be received and relayed to different parts of the ship, has been introduced by The Marconi International Marine Communication Company, Marconi House, Chelmsford, Essex.

  The receiver, which is known as the Mimco, consists of a Dynatron manufactured sensitive 9-valve superheterodyne receiver and an audio power amplifier. The receiver unit is common to all installations, but the power amplifier is chosen according to the number of loudspeakers employed. A 10-watt unit suffices for small installations with up to 10 extension speakers and these and the receiver can be housed in a single cabinet measuring 251 x 19 x 131 in and weighing 90 lb.

  Short, medium, and long waves are covered in four bands, their respective tuning ranges being 10 to 32 metres, 30 to 85 metres, 180 to 570 metres and 800 to 2,000 metres.

  A tuned RF stage is employed, also variable bandwidth in the IF amplifier, the five switch positions corresponding to 5-, 10-, 15- and 20-kc/s bandwidth. There is a tone control.

  The receiver takes 95 watts from AC mains of either 115 V or 230 V of 40 to 80 c/s.
  If required, a converter can be supplied for operation on 110 or 220 V DC.

  Receiver T139

  • V1 EM34
  • V2 Z77-EF91-6AM6
  • V3 W77-EF92-6F21
  • V4 X79-6AE8-51
  • V5 L77-EC90-CV133
  • V6 Z77
  • V7 W77
  • V8 DH77-EBC90-6AT6
  • V9 Z729
  • V10 W77
  • V11 EM34

  Pre-Amplifier 1181C

  • 6BR7-8D5-CV2135

  AC Power Supply LF512A

  • V201 Z77
  • V202 Z77
  • V203 6V6G
  • V204 6V6G
  • V205 KT66
  • V206 5V4G

   

• Net weight (2.2 lb = 1 kg)
• 90 lb (90 lb 0 oz) / 40.860 kg

• Source of data
• -- Collector info (Sammler)

• Mentioned in
• -- Original prospect or advert (Wireless World Aug 1953, Page 370.)

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 501 models, 334 with images and 317 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice)