[ARC5] "Using Defective Crystals" 1937

[Hubert Miller]

Crystals seem to be a popular topic among radio communication hobbyists.
Herewith an item from ' Short Wave and Television ' magazine, Dec. 1937.
I have to admit, I do not understand how the added coil would work to increase
feedback gain. It does not appear to be coupled in any way to an output inductor.
( There are a number of crazy, fascinating, and instructive kinks hiding in the old
magazines. )
-Hue Miller

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