• Country
• United States of America (USA)

• Manufacturer / Brand
• Ampex; San Carlos, CA

• Year
• 1961 ?

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 219466

• Number of Tubes
• 4

• Valves / Tubes
• 12AX7 12AX7 12AX7 12AX7

• Number of Transistors

• Semiconductors
• Selenium-Rectifier Selenium-Rectifier

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Multiplex Decoder 520 Cat.No. 01-0520 - Ampex; San Carlos, CA

• Shape
• Chassis only or for «building in»

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 84 models, 81 with images and 19 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ampex; San Carlos, CA