• Country
• United States of America (USA)

• Manufacturer / Brand
• Sylvania (Hygrade, GTE, Nilco); Emporium (PA)

• Year
• 1955 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 120032

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

• Number of Tubes
• 7

• Valves / Tubes
• 7C7 7B5 7A4 7N7 7C5 7C5 7Z4

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: Audio Oscillator 145 - Sylvania Hygrade, GTE, Nilco;

• Notes
• Three AF frequency ranges, three AF output levels.

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 1092 models, 455 with images and 958 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sylvania (Hygrade, GTE, Nilco); Emporium (PA)