[RadioSvit]

Hello everyone. I haven't been active in this topic for six months, but during this time I have been quite actively engaged in the restoration of this Philco. In the winter I solved the problem with the worn anode winding of the output transformer. I simply disassembled this transformer and using a simple device with a counter, I unwound and counted the number of turns of the secondary and primary anode coils of the transformer.

   

The anode primary winding has 2800 turns of wire with a diameter of 0.16 mm or 0.064 inches. The secondary winding has 55 turns with a diameter of 1.0 mm or 0.4 inches. Thus, I calculated the transformation coefficient, which is equal to 50.9.
Over the years of repairing and restoring tube radio equipment, I have accumulated a lot of output transformers from Soviet radios and I was surprised when one of the transformers turned out to have exactly these characteristics, and its ferromagnetic core has even greater thickness and volume, and therefore better inductance and hysteresis characteristics. Therefore, I will probably use this transformer, and not wind the transformer from Philco. Well, at least temporarily, because I don’t have the 0,16 mm thick wire I need right now.

   

And finally, this winter I made a video on the restoration of this Philco cabinet. Six months after the restoration itself was completed

[Video: https://www.youtube.com/watch?v=vdnVphG-HO4&t=1234s]