• Country
• United States of America (USA)

• Manufacturer / Brand
• Ferris Instrument Co.; Boonton, (NJ)

• Year
• 1935 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 206560

• Number of Tubes
• 4

• Valves / Tubes
• 56 56 56 80

• Main principle
• Transmitter

• Wave bands
• Wave Bands given in the notes.

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Microvolter 10B - Ferris Instrument Co.; Boonton

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 14 x 10 x 8 inch / 356 x 254 x 203 mm

• Notes
• This is a RF generator test-bench unit. The unit has a 0 to 10 microvolt vernier control with five (X1, X10, X100, X1k, X10K) switch selectable voltage ranges. There is a very fine-tune-able vernier RF control with five switch-selectable RF bands (A, B, C, D, E) with unspecified RF frequency within those bands. An interesting note is that the actual oscillator unit within the Microvolter is a drop-in unit manufactured outside of Ferris by Foote-Pierson company.

• Net weight (2.2 lb = 1 kg)
• 16 lb (16 lb 0 oz) / 7.264 kg

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

• Author
• Model page created by Hank Kaczmarski. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 5 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ferris Instrument Co.; Boonton, (NJ)