• Country
• Switzerland

• Manufacturer / Brand
• Metrohm AG; Herisau

• Year
• 1950 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 104885

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

• Number of Tubes
• 4

• Valves / Tubes
• EF22 EBL21 EBL21 AZ21 150A1

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110-250 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: NF-Signalgenerator ME51 - Metrohm AG; Herisau

• Shape
• Tablemodel, slant panel.

• Dimensions (WHD)
• 420 x 285 x 235 mm / 16.5 x 11.2 x 9.3 inch

• Notes
• Frequenzbereich 20Hz bis 20kHz, Ausgangsspannung max. 25V.

• Net weight (2.2 lb = 1 kg)
• 12 kg / 26 lb 6.9 oz (26.432 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Alexander Küffer. See "Data change" for further contributors.

• Other Models

• Here you find 7 models, 6 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Metrohm AG; Herisau