Predicta Holiday G4242M Ch= 9L37

Philco, Philadelphia Stg. Batt. Co.; USA

Data
Forum
Pictures
Collections

  • Year
  • 1959 ?
  • Category
  • Television Receiver (TV) or Monitor
  • Radiomuseum.org ID
  • 104838

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

 Technical Specifications

  • Number of Tubes
  • 16
  • Main principle
  • Superheterodyne (common); ZF/IF 45750 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) - elliptical / Ø 4 inch = 10.2 cm
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Predicta Holiday G4242M Ch= 9L37 - Philco, Philadelphia Stg. Batt
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 23.5 x 27.5 x 14.5 inch / 597 x 699 x 368 mm
  • Notes
  • The Philco G4242M is a 21" b/w TV with US standard VHF tuner channels 2 thru 13. Equipped with chassis 9L37, VHF tuner T-68G and picture tube 21EAP4 or SF21A. Cabinet is Mahogany. Swiveling top-mount CRT enclosure. Built-in telescoping antenna. NOTE: a common replacement CRT for the 4242 is the 21FDP4 (this requires a slight mod to the filament circuit as it is a 6.3V heater as compared to the original 2.3V; the mod: a short across the 8 ohm section of the filament resistor)
  • Source of data
  • - - Data from my own collection
  • Literature/Schematics (2)
  • - - Manufacturers Literature
  • Author
  • Model page created by Thomas Albrecht. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Predicta Holiday G4242M is part of the collections of the following members.

Museums

The model Predicta Holiday G4242M can be seen in the following museums.

 Forum

Forum contributions about this model: Philco, Philadelphia: Predicta Holiday G4242M Ch= 9L37

Threads: 1 | Posts: 1

In order to make the picture tube housing more compact for its Predicta line of TVs, Philco created a new cathode ray tube (CRT) design with a very compact electron gun and a short tube neck.  Unfortunately, CRTs with this new design turned out to have a very short life.  CRTs failed after only a few years of use, severely damaging Philco's reputation in the TV business, and contributing to Philco's exit from the TV business and sale of the company to Ford.

Today, almost all Predictas which have the original tube intact have low emission on the CRT.  When testing, be careful, since the 21EAP4/SF21A CRT has a 2.5 volt heater (unlike almost all other CRTs from that era, which have 6.3 volt heaters).  Applying 6 volts can burn out the heater.  If the CRT is bad, there are several companies that rebuild CRTs, and the Predicta, with its relatively high value among collectors, is one of the few sets for which CRT rebuilding makes economic sense.

Tom

Thomas Albrecht, 03.Sep.06

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