05-05-2018, 04:54 PM
I merged your new thread with the original 44 chassis thread to keep the discussion together per the Phorum Rules.
As morzh notes, those adjustments on the back are used to align the set and are described in the schematic information found on nostalgiaair. They were not meant for the home user to adjust since they require some knowledge about the alignment procedure. I have never done an alignment on a 44 but generally it is done with a signal generator mentioned in an earlier post with adjustments to the various IF transformers and the oscillator in a particular order with the correct signal generator settings while monitoring the output voltage across the output transformer primary.
Here's a summary alignment chart taken from John Riders "Aligning Philco Receivers" from 1937, p. 66.
[Image: https://www.dropbox.com/s/wr9z55mx92s7k1....jpg?raw=1]
As morzh notes, those adjustments on the back are used to align the set and are described in the schematic information found on nostalgiaair. They were not meant for the home user to adjust since they require some knowledge about the alignment procedure. I have never done an alignment on a 44 but generally it is done with a signal generator mentioned in an earlier post with adjustments to the various IF transformers and the oscillator in a particular order with the correct signal generator settings while monitoring the output voltage across the output transformer primary.
Here's a summary alignment chart taken from John Riders "Aligning Philco Receivers" from 1937, p. 66.
[Image: https://www.dropbox.com/s/wr9z55mx92s7k1....jpg?raw=1]
