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Originally Posted by Mike(Mont)
I would like to find out more about the Raven LRL like where on the dial is it set for gold? Carl said he hooked up a speaker so he could probably get a good estimate of the frequency from a nearby radio station.
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From what I read, nobody has located buried metal with the Raven. But with some simple modifications, it could probably be used to listen to AM broadcasts.
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Originally Posted by Mike(Mont)
I've heard of oldtimers using a crystal radio to locate mineral veins. I guess they could hear a popping noise in the headphones (piezoelectric activity?). So this is another option I will check out. BTW, be careful as this popping can damage your hearing. Another option is to hook up an amplifier with filters, etc.
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I have read these stories too. I read stories where they would hear weak signals become stronger when using an old-style AM radio. Are they true stories? Who knows? It only costs the price of an AM radio to find out. If you are using the kind of crystal radio that uses a crystal earphone, then there is no danger of ear damage. They can't produce a loud enough sound to damage your ears as far as I know.
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Originally Posted by Mike(Mont)
Will any of this work? I really think it should help. As for the induction loop to a signal strength meter or even to the L-rods, maybe these do not even need to be connected, just close to the person's hands. I know I can feel some kind of capacitive change when I put my hands near the capacitor. It feels like a cool breeze, like a bumble bee.
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I seriously doubt you will find any buried metal with this method. But you can have hours of fun trying. Let me know if it works. The next step is to visit Randi.
Best wishes,
J_P