• Country
• United States of America (USA)

• Manufacturer / Brand
• General Radio Company; Cambridge (MA)

• Year
• 1950–1956 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 157786

• • alternative name: GenRad

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: Sound-Level Meter 1551-A - General Radio Company;

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 7.5 x 5.75 x 10.75 inch / 191 x 146 x 273 mm

• Notes
• General Radio Sound-Level Meter 1551-A;
  One instrument for dB, on/off with microphone up, mic. holder with XLR plug, 5 terminals for ext. filter, out and others.

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

• Other Models

• Here you find 241 models, 212 with images and 131 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Radio Company; Cambridge (MA)