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Ideally, I would build a self-contained receiver for the VLF antenna, in order to properly receive and amplify the faint signals from the upper atmosphere.
However, I wanted to see if it was possible to just use an OpAmp to boost the signal before feeding it to an arduino for capture. This is what the split powersupply was, the op amp that I am using (an RC4558) required a positive and negative power supply.
This is the output from a circuit which I build to test the OpAmp:
It is the square wave output from my oscilloscopes calibration port Notice at the bottom of the screen that both channels are set to the same voltage scale (20.0V). Clearly, the channel 1 output (yellow) is far stronger than the Channel 2 input (blue).
I now need to wire this up to the antenna.
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