[RodB]

It seems these radios of the 1930s were experiments when it came to antenna signals and getting as many stations as possible to come through. We can only assume the direction of the design, but I think many antenna designers of that time were trying to come up with a device that would lower the noise level and still bring in the distant signals. What looks like a simple rf transformer in the schematic has surfaced as a mystery. This is quite often one reason why we do these restorations.