I'm reading the auto biography of Lee deForest written in 1950 and he
often talks about how things were back in the "old days".


He mentioned a Wig Wag transmitter but did not describe it.


Earlier in the book he mentioned how the transmitters had the telegraph
key wired to the tuning coil and the transmission would occur at one
frequency and an idle carrier wave would remain at another.

Is that what He meant by wigwag?



Interesting side note:

Though he invented the triode and recognized at once it's value, there
was no where in the book where he gave a cogent explanation of how it
actually worked.