• Country
• United States of America (USA)

• Manufacturer / Brand
• DeForest Radio Telephone & Telegraph Co. (De Forest); New York

• Year
• 1920

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 193856

• • alternative name: Lee De Forest Mfg.

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

• Number of Tubes
• 1

• Valves / Tubes
• VT-Class-I or B_Moorhead-Shaw

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: UtilityTime Receiver RS-200 - DeForest Radio Telephone &

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 9 x 9.125 x 7.75 inch / 229 x 232 x 197 mm

• Notes
• The De Forest Utility Time Receiver was designed to operate on wavelengths from 100-25,000 meters. This receiver was an improvement of the Jewelers' Time Receiver in a slightly larger cabinet. it could receive government time signals from NAA Arlington, VA, on 2655 meters / 112.9 kHz, at 02:55 GMT, or on 2400 meters / 124.9 kHz at 16:55 GMT, or at the same times from NSS Annapolis on 16,900 meters / 17.74 kHz, or NAR Key West on 1463 meters / 205.0 kHz.

• Net weight (2.2 lb = 1 kg)
• 15 lb (15 lb 0 oz) / 6.810 kg

• Price in first year of sale
• 45.00 $

• Source of data
• -- Original prospect or advert

• Literature/Schematics (1)
• De Forest Catalog "D" page 27

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 158 models, 132 with images and 15 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from DeForest Radio Telephone & Telegraph Co. (De Forest); New York