[Radio Wrangler]

Ah, thanks, Bill.

There looks to be an error in that diagram (not an unusual thing to find) the input coils are indeed transformers and the antenna is switched to one of the input windings. The problem is that the other ends of those windings are grouped together and go nowhere other than to each other, and the input ends of the unselected windings are switched out of circuit.

This wouldn't work!

I expect there is a connection from the Earth terminal to the bottom ends of the input windings. This will make the receiver work, and you'll get a low Ohms reading between the Aerial and Earth terminals.

David