• Country
• Switzerland

• Manufacturer / Brand
• Mediator; La Chaux-de-Fonds

• Year
• 1940/1941

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 12323

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

• Number of Tubes
• 4

• Valves / Tubes
• ECH3 EF9 EBL1 AZ1

• Main principle
• Superheterodyne (common); ZF/IF 128 kHz; 1 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 145; 200; 220; 245 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17.5 cm = 6.9 inch

• Material
• Bakelite case

• from Radiomuseum.org
• Model: M90A - Mediator; La Chaux-de-Fonds

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

• Dimensions (WHD)
• 445 x 310 x 235 mm / 17.5 x 12.2 x 9.3 inch

• Notes
• 3 Band reception:
  • LW: 708 - 2000 m.
  • BC: 175 - 585 m.
  • SW: 13,8 - 51 m.
  Tuning scale light bulbs type: 8045D (6,3V, 320mA).
  Loudspeaker Philips type 9648. Connectors for second loudspeaker and for pick-up. 
   
  See also models Philips RA90A-14, NSF-Aristona H90A (-20), SFR-Radiola RA90A, Mullard MAS90, Rektra RA90, Philips 480A.

• Net weight (2.2 lb = 1 kg)
• 8.1 kg / 17 lb 13.5 oz (17.841 lb)

• Price in first year of sale
• 295.00 SFr

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Thali-Schemasammlung und Tungsram-Röhrenbestückung.

• Literature/Schematics (1)
• -- Original-techn. papers. (Generic model 90A by Philips dated 1939)

• Other Models

• Here you find 371 models, 325 with images and 225 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Mediator; La Chaux-de-Fonds