zenith: Zenith 4-R schematic
ID: 557976
This article refers to the model: 4R Long Distance Receiver-Amplifier late (no porthole) (Zenith Radio Corp.; Chicago, IL)
zenith: Zenith 4-R schematic
31.Jul.21 14:02
518
On the new schematic an arrow is drawn through the tickler coil indicating variable coupling. The number 9 is added to the serial number, it was drawn in with a pen while the other digits were stamped.
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