View single post by clockdryve
 Posted: Feb 14th, 2011 05:56 PM
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clockdryve



Joined: Feb 7th, 2010
Location: Des Moines, Iowa USA
Posts: 425
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 The "F0-215" Germanium Diode is considered the "Holy Grail"
of Crystal Diodes... Most "sensitive" (better than the Schottky Diode), so you might want to try that one also. I would recommend using a metal box as a shield to unwanted reception...cell phones and other electrical interferance items. The shield is that "dotted lines" in the 2nd circuit I showed you (make a fully enclosed box), and no short circuits (remember to not allow the antenna to short against this shield) *The antenna can be a piece of STIFF wire with rubber insulation around it...doesn't need to be bare to receive. That metal shield also has the ground symbol attached to it also. It wouldn't hurt to have an aligator clip attached to a "post" attached to this shield...and ground it to "ground" for ultimate protection from interferance (like electrical hum possibly) *keep the ground wire short if possible.