• Country
• Spain

• Manufacturer / Brand
• Optimus; Gerona

• Year
• 1962 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98017

• • alternative name: Pla Hermanos y Cía

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

• Number of Transistors
• 7

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 3 AF stage(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Dry Batteries / 2 × 4,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Seven N.C. - Optimus; Gerona

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• Transistors: OC170, 2× 0C45, 2× OC71 (6FT21/15 or OC75), 2× OC72.

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

• Other Models

• Here you find 195 models, 129 with images and 98 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Optimus; Gerona