1929 Philco video
https://www.youtube.com/watch?v=d198MtZHbZ0
This video popped up on my Youtube feed. The radios being built may be the Philco model 511. I was impressed by the 4 gang tuning cap apparently with brass plates (because they are soldered). Philco was really vertically integrated except for the tubes. They even made their own speakers and capacitors !
The 511 needs those 4 ganged caps as it is a TRF (Neutrodyne plus). When I see 4 ganged caps I think expensive (for example: the Hallicrafters SX-88). How did they ever get them to track ?
https://philcoradio.com/library/index.php/service-info/early-schematics/
Per this page:
http://www.tuberadioland.com/philco511_main.html
the 511 fully outfitted was $160 which inflates to $2734 in 2022 dollars ! I suppose things changed really soon after the filming due to the depression.
An interesting video
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm
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