• Country
• United States of America (USA)

• Manufacturer / Brand
• Boonton Rubber Mfg. Co.; Boonton NJ

• Year
• 1923/1924

• Category
• RF (Radio Frequency-) Amplifier

• Radiomuseum.org ID
• 205059

• Number of Tubes
• 1

• Valves / Tubes

• Main principle
• Radio Frequency Amplification only

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite, TUBES VISIBLE

• from Radiomuseum.org
• Model: Radio frequency amplifying unit model 5 - Boonton Rubber Mfg. Co.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 3 x 5 x 8 inch / 76 x 127 x 203 mm

• Notes
• This model "Radio frequency amplifying unit model 5" offers a wave length from 200 to 600 meters and patents are used from RFL. It uses a "Ballantine Variotransformer" model 5 at that time the price was $ 9.60 and it offered a range of 170 to 550 meters (in contrast to the entire set). It seems to us that the first notice was in October QST magazine - for the Ballantine Variotransformer" on page 128. For the full model we show a January 1924 ad.

• Price in first year of sale
• 15.00 $

• Source of data
• - - Manufacturers Literature

• Literature/Schematics (2)
• Radio Broadcast, Mar. 1924, p. 442

• Author
• Model page created by Daniel Steele. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 2 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Boonton Rubber Mfg. Co.; Boonton NJ