• Country
• Italy

• Manufacturer / Brand
• Unaohm Start, Ohm, E. Pontremoli; Milano

• Year
• 1960 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 162270

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 120;160;220 Volt

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Provavalvole GB25-A - Unaohm Start, Ohm, E.

• Shape
• Tablemodel, with any shape - general.

• Notes
• Tube tester with 10 sockets. Emission and conductance tests. Plate currents up to 100mA.

• Author
• Model page created by Javier Albinarrate. See "Data change" for further contributors.

• Other Models

• Here you find 166 models, 142 with images and 71 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unaohm Start, Ohm, E. Pontremoli; Milano