• Country
• Spain

• Manufacturer / Brand
• Optimus; Gerona

• Year
• 1950

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 118028

• • alternative name: Pla Hermanos y Cía

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

• Number of Tubes
• 9

• Valves / Tubes
• 6SL7 or 6SN7 6SN7 6F6 or 42 807 807 5Z3 6V6 or 6F6 866 or 866A or DCG4/1000 866 or 866A or DCG4/1000

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110 - 125 Volt

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

• Power out
• 100 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: 890 - Optimus; Gerona

• Shape
• Chassis only or for «building in»

• Mentioned in
• Anuncio Radiovision 10/1952

• Author
• Model page created by Juan Ignacio Balada † 2009. See "Data change" for further contributors.

• Other Models

• Here you find 197 models, 134 with images and 98 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Optimus; Gerona