• Country
• Spain

• Manufacturer / Brand
• Promax; Barcelona

• Year
• 1967

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 173375

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Preamplificador de Osciloscopio PR-1100 - Promax; Barcelona

• Shape
• Book-shelf unit.

• Notes
• Monocanal; Amplificación: 0, +20dB, +40dB.
  Ancho de banda amplificador:
  para 20dB de 3 Hz a 3 MHz.
  para 40dB de 3 Hz a 1,5 MHz.

• Literature/Schematics (1)
• Catálogo Promax 1967

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

• Other Models

• Here you find 198 models, 180 with images and 73 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Promax; Barcelona