My Grandfather's Crystal Set (FF Made No More)

This is my grandfather's crystal set dating from the early 1920s. It required a long aerial, a good earth and a lot of fiddling with the "cat's whisker" to create a diode detector on the germanium crystal. Listening was via headphones connected to the terminals at the front. It was manufactured by the Telephone Manufacturing Company in London but it's made no more!

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