[Boatanchors] Re Why Twin Diodes In Xtal Sets?

[Duane Fischer, W8DBF]

Hello All,

I have noticed that some MW and SW crystal sets from the forties and fifties 
employ a pair of detectors instead of just one. Can you please explain to me 
the reasons why and how such a circuit would work?

Is there 'really' a benefit to using two?

Although I have never personally come upon plans for one, I was told by an 
older Ham that two diodes were used in crystal sets that received FM. Is 
this correct? If so, what role do two diodes play in FM signal detection 
specifically?

Thank you.

Duane W8DBF

Duane Fischer, W8DBF/WPE8CXO
dfischer at usol.com

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