48-1000-5 codes 121 and 125

Philco, Philadelphia Stg. Batt. Co.; USA

Data
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  • Year
  • 1947
  • Category
  • Television Receiver (TV) or Monitor
  • Radiomuseum.org ID
  • 170462

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

 Technical Specifications

  • Number of Tubes
  • 26
  • Main principle
  • Superheterodyne (common); ZF/IF 26600/22100 kHz
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-120 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm
  • Power out
  • 2.5 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 48-1000-5 codes 121 and 125 - Philco, Philadelphia Stg. Batt
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • The Philco model 48-1000 television was introduced in 1947. It has an 8-channel turret tuner with plug-in coils, so that any 8 of the available channels 1-13 could be selected. A unique design feature is a dual 300 ohm antenna input, intended for separate antennas for the VHF low and VHF high bands.

    Three chassis codes were used in the following chronological order: code 121, code 125, and code 122. Codes 121 and 125 are similar, both having 26 tubes. In code 122, the 1N34 crystal diode DC restorer was replaced with a 6AT6 tube, bringing the tube count to 27.

    Philco had other TV models with similar chassis. Model 48-1050 was a console version of the 48-1000, with the same three available chassis codes. Model 48-1001 is a table model electrically identical to 48-1000 code 122, but has a simpler cabinet style. Models 48-1000-5, 48-1050-5, and 48-1001-5 have power supplies designed for 50 Hz AC supply, but are otherwise identical to the models without the -5 suffix. Model 48-2500 is a large console projection set with a chassis based on the 48-1000 design, but with several significant changes to support the projection CRT system.
  • Price in first year of sale
  • 395.00 $
  • Source of data
  • -- Original prospect or advert
  • Circuit diagram reference
  • Photofact Folder, Howard W. SAMS
  • Literature/Schematics (1)
  • Rider TV Philco 1-1; SAMS set 53 folder 17
  • Author
  • Model page created by Thomas Albrecht. See "Data change" for further contributors.

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