11S474 11-S-474 Ch=1103

Zenith Radio Corp.; Chicago, IL

  • Jahr
  • 1940
  • Kategorie
  • Rundfunkempfänger (Radio - oder Tuner nach WW2)
  • Radiomuseum.org ID
  • 67300
    • anderer Name: Chicago Radio Lab

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 Technische Daten

  • Anzahl Röhren
  • 11
  • Hauptprinzip
  • Super mit HF-Vorstufe; ZF/IF 455 kHz
  • Wellenbereiche
  • Mittelwelle, Kurzwelle und Tropenband.
  • Betriebsart / Volt
  • Wechselstromspeisung / 115 Volt
  • Lautsprecher
  • Dynamischer LS, mit Erregerspule (elektrodynamisch) / Ø 12 inch = 30.5 cm
  • Material
  • Gerät mit Holzgehäuse
  • von Radiomuseum.org
  • Modell: 11S474 11-S-474 Ch=1103 - Zenith Radio Corp.; Chicago,
  • Form
  • Standgerät mit Drucktasten.
  • Abmessungen (BHT)
  • 29.1 x 43.1 x 16.1 inch / 739 x 1095 x 409 mm
  • Bemerkung
  • Member John Goller has reported an error in the Zenith schematics for Chassis 5808 covering models 8S443, 8S451, and 8S463.  The same error is found in Chassis 1005 covering models 10S443, 10S452, 10S464, 10S470, 10S491, and 10S492, and in Chassis 1103 for model 11S474.

    This error is in the Wavemagnet Antenna circuit. The Wavemagnet antenna for the above model does not have a "Wavemagnet or External" antenna switch on the antenna.  It does have a Local Distance switch which grounds a 10K resistor to the cathode of the 1232 RF amp tube for distance position.  The other leads from the Wavemagnet to into the radio chassis also have errors.  These errors appear to have originated in the Zenith Service Manuals and have been carried forward in the Riders and Beitman schematics.

    John Goller has prepared a revised schematic that shows the correct Wavemagnet Antenna circuit wiring along with the correct antenna plug pin connections.  This schematic is included in the model file.

  • Datenherkunft extern
  • Ernst Erb
  • Schaltungsnachweis
  • Rider's Perpetual, Volume 11 = ca. 1940 and before

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 Forum

Forumsbeiträge zum Modell: Zenith Radio Corp.;: 11S474 11-S-474 Ch=1103

Threads: 1 | Posts: 2

Hi  there,  this is my first post/question...

I  want to add an audio in (aux in) to this  radio...I know some  electronics but  I need to know where do add the input jack.

It would be for an mp3 player, so I dont  need  it to power the external device.

I would  like  to have a little switch in back so i can choose to run off the radio circuit or switch to external device.

Would greatly appreciate all and any help on this!

I'm assuming people reading this has access to the schematic on the 11s474 page...

Thanks so much!

Tim.

Tim Brunton, 12.Mar.13

Weitere Posts (2) zu diesem Thema.