• Country
• Denmark

• Manufacturer / Brand
• Brüel & Kjær; Nærum

• Year
• 1958 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 112031

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

• Number of Tubes
• 5

• Valves / Tubes
• ECC81 ECC83 EF94 ECF82 EZ90 0A2 0B2

• Wave bands
• - without

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Microphone Amplifier 2603 - Brüel & Kjær; Nærum

• Dimensions (WHD)
• 403 x 413 x 230 mm / 15.9 x 16.3 x 9.1 inch

• Notes
• Verstärker und Messgerät zum Messen von NF-Signalen. RMS, Peak und Average. 0,1 mV bis 1000 V, -100 dB bis +40 dB, Filter A-, B-, oder C-Bewertung.

• Net weight (2.2 lb = 1 kg)
• 13.5 kg / 29 lb 11.8 oz (29.736 lb)

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

• Author
• Model page created by Andreas Sommerer. See "Data change" for further contributors.

• Other Models

• Here you find 63 models, 61 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Brüel & Kjær; Nærum