4P19W Ch= 682-2

• Country
• United States of America (USA)

• Manufacturer / Brand
• Sylvania (Hygrade, GTE, Nilco); Emporium (PA)

• Year
• 1961

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 85838

• Picture
• Schematics

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

• Number of Transistors
• 4

• Semiconductors
• 2N212 SYL2132 SYL2131 SYL2135

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; Reflex

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 4P19W Ch= 682-2 - Sylvania Hygrade, GTE, Nilco;

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 160 x 90 x 45 mm / 6.3 x 3.5 x 1.8 inch

• Notes

• A 4 transistor reflex receiver using Sylvania transistors. Unusually, the volume control adjusts the sensitivity of the input from the ferrite rod antenna and is not in the usual AF part of the circuit. The circuit is about the same in all the five following models: 4P19W, 4P19WC, 4P19WD, TH10W and 7058

• Net weight (2.2 lb = 1 kg)
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 22, 1962

• Mentioned in
• M.B.Schiffer: The Portable Radio in American Life

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 4-62, Set 573, Folder 16)

• Literature/Schematics (2)
• Antique Radio Magazine - Italy, Club Antique Radio Magazine (n. 129 gennaio-febbraio 2016, pag. 36-39)

• Other Models

• Here you find 1087 models, 455 with images and 956 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sylvania (Hygrade, GTE, Nilco); Emporium (PA)