mm may be this is only the begin of an intersting lrl, i think morgan can voila how rocket to moon, to this little project
whit other transistor input and preamplifer, e.g 3904 may be can detect in metales, radio reception so far
too whit other transistor dupla complementaries: bc547+ A1273Y you can put very hig and stronger sound what need block further whit your hands, your ears
i whis good future for this wird project
i like to parabolic grounded be incluide for directional, may be an big lamp handed light deflector
ohhhhhh mam! what bad is my english!
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