• Country
• United States of America (USA)

• Manufacturer / Brand
• Mallory, P.R. & Co.; Indianapolis, IN

• Year
• 1952

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 91253

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

• Number of Tubes
• 2

• Valves / Tubes
• 6AF4 6CB6

• Number of Transistors

• Semiconductors
• Selenium-Rectifier 1N72 or. 1N82

• Main principle
• Superheterodyne (common)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: UHF Converter TV-101 [Late] - Mallory, P.R. & Co.;

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Notes

• With germanium or silicon point contact diode as UHF mixer. This converter has classic styling and it was one of the very first UHF converters. It was a very popular model. Converts US-UHF Channals 14-83 into US-VHF Channel 5 or 6, uses the Mallory Inductuner, OEM Production with Type/Brands: Arvin 3000, Alliance AC-80, Sylvania C33M, CBS-Columbia, Silvertone 6950 (Sears, Roebuck & Co.), Sparton, Mall-Ex, Crosley DU-UHFP, Sutco 23A.
  
  Earlier that same year, a 3-tube chassis version Mallory TV-101 [Early] was manufactured. The earlier circuit also uses the 6AF4 oscillator and 1N72 or 1N82 mixer, followed by a 6BQ7 or 6BK7 IF amp, with a 6X4 (instead of the selenium rectifier stack) for high voltage.

  Note that the 3-tube Early version has a S/N less than 200,000; the 2-tube Late version has a S/N 200,000 and above.

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

• Other Models

• Here you find 36 models, 29 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Mallory, P.R. & Co.; Indianapolis, IN