I did a lot of research to find this diode (Schottky Bat-46) actual has a lower forward break down voltage than a germanium diode at less than 10ma it has a forward voltage of .25 germanium has .35 volt.
Experiment with the Schottky BAT46 diode in your next crystal radio set ( Xtal Radio Set ) project.
The Schotty Barrier Diodes like the BAT 46 are becoming ever more popular in Ham Radio and Amateur Radio community. The are being used as up converters and down converters ( Mixers ) and a host of other applications in radio and RF circuits. Generally replacing the germanium type diodes.