We say it wont work...
You built it and it didn't work....
so what is the problem?
You just don't seem to comprehend what we are saying. A receiver that picks up all signals at once, no matter whether it is low frequency or high frequency, is of no use to anyone. All you hear is the envelope of a random selection of different frequencies, phases and amplitudes mixed together. It isn't a matter of gain or of the bandwidth of the devices, it is simply missing some necessary circuit functions to enable it to operate.
If it really is to receive audible EM waves (whistlers etc.), the detector at the input is a bad idea and should be replaced with a low-pass filter.
Brian.