• Country
• United States of America (USA)

• Manufacturer / Brand
• JBT Instruments, Inc.; New Haven, Ct,

• Year
• 1940 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 328802

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Hertz Meter 31-F - JBT Instruments, Inc.; New

• Shape
• Chassis only or for «building in»

• Author
• Model page created by David Erali. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 0 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from JBT Instruments, Inc.; New Haven, Ct,