• Country
• Switzerland

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

• Year
• 1937 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 172901

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

• Number of Tubes
• 5

• Valves / Tubes
• AK2 AF3 AB2 AL4 AZ1

• Main principle
• Superheterodyne (common); ZF/IF 128 kHz

• 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 21 cm = 8.3 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: M4A [Querformat] - Mediator; La Chaux-de-Fonds

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

• Dimensions (WHD)
• 550 x 330 x 305 mm / 21.7 x 13 x 12 inch

• Notes
• 3-fach - Drehko. Chassis wie Philips 456A. Wie Mediator Modell M4A Hochformat. Die Skalenbeschriftung ist leicht abweichend.

• Net weight (2.2 lb = 1 kg)
• 12.8 kg / 28 lb 3.1 oz (28.194 lb)

• Author
• Model page created by Ottmar Lauth. See "Data change" for further contributors.

• 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