• Country
• Italy

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

• Year
• 1975 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 192535

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

• Number of Tubes
• 1

• Valves / Tubes
• D13-620GH

• Number of Transistors
• 55

• Semiconductors
• SN7470 SN7400 SN7400 SN7400 SN7403 W04 1N4007

• Wave bands
• - without

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Dual Trace Oscilloscope G421-DT - Unaohm Start, Ohm, E.

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 190 x 300 x 400 mm / 7.5 x 11.8 x 15.7 inch

• Notes

• Oscilloscopio doppia traccia. Banda passante 20 MHz. Base dei tempi da 1 s a 0.2 µs. Ingresso verticale da 20 V/cm a 10 mV/cm. Calibratore incorporato 1 Vpp. Ingresso posteriore asse Z. Ingresso trigger esterno.

  55 Transistor, 5 IC, 12 Diodi Zener, 24 Diodi, 7 Diodi raddrizzatori 1N4007, 3 Ponti raddrizzatori W04 ed un ulteriore Ponte raddrizzatore W06 di cui non si conosce se F o G.

• Net weight (2.2 lb = 1 kg)
• 5 kg / 11 lb 0.2 oz (11.013 lb)

• Author
• Model page created by Marco Mazzucchelli. See "Data change" for further contributors.

• Other Models

• Here you find 171 models, 147 with images and 72 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unaohm Start, Ohm, E. Pontremoli; Milano