My YouTube video

1936 Philco 610 Radio Restore. Pt 1.
https://youtu.be/VDLj0-Vl6Ko

Thats the most unusual tube tester. I have heard of card-matic units before but never saw on in action.

Those little sheet metal things around the tube sockets were used to hold square tube shields in place.

I also heard these were used to exclude use of metal-envelope tubes. :no: Only smaller diameter base of glass tubes would fit, so Philco was giving RCA and GE the raspberries. These are found as late as 1938 models, I have been forced to remove a few based on what good tubes I had available.

Im looking forward to part two, to see how bakelite blocks with caps (and sometimes resistors too) are handled. I have done more Philco repairs than on any other radio of this era.

Thanks for watching Dave. Good info on those Square tube shields

Finishing up

1936 Philco 610 Radio Restore. Pt 2
https://youtu.be/UMQ9jVp9P9A