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 Different types of Crystals for radios

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Join date : 2010-11-22

PostSubject: Different types of Crystals for radios   2016-11-13, 6:05 pm

I have tried numerous different xtals for use in xtal radios.
The old Galena detectors embedded in either lead, solder or Whites Metal, 1N34, 1N34A, (Some sources indicate that the newer 1N34's are not as good as the older ones), 1N21,1N60, 1N60A, (Used as video det. in some 1950's B&W TV sets) 1N270, (From an old UHF tuner), old germanium xistors that had defects - E- B  or B-C junctions used, Carborundum- (with battery), Copper ore, Galena ore, Iron Pyrite, and a few other types of metallic crystals.
  Tested on the BCB only, so far.
So far, I found the best to be the galena detectors, followed by the 1N34 & 1N60 types.

Have any of you experimented with different types of detector materials? I would like to know of your experiences.

 I do know that they used Mercury detectors using a Platinum wire in a Mercury pool; but have not tried that yet. (Yes, I know the hazards of Mercury fumes. I do some prospecting also as a hobby).
 I want to try casting a Galena crystal into a copper plumbing cap with either lead or solder to hold it in place at some point also.

Last edited by FrankB on 2016-11-27, 5:53 pm; edited 1 time in total
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Cliff Jones
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Join date : 2010-11-22

PostSubject: Re: Different types of Crystals for radios   2016-11-22, 11:52 pm

I think there's a microchip that's a mosfet that Has a lower threshold of 0 volts.

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I'm a Science Thinker, Radio Tinkerer, and all around good guy. Just ask Me!
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Different types of Crystals for radios
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