[Boatanchors] Strange Question Antenna

[Keith Densmore]

OK, here goes. Has anyone tried to use their shortwave antenna as a DC
voltage source? By that, I mean rectifying ALL the energy coming into the
antenna via a step up transformer, diode rectifier and charging, smoothing
capacitor or small battery?
Reason for asking--My zero power crystal radio has a germanium diode with a
forward bias of about .3 volts. Can an untuned antenna generate that much
voltage to forward bias the diode and therefore increase its sensitivity?
Thought I would ask before I experiment.
Thanks, Keith
ve3gem