I think this would be a FW/SW change only, and while there is more overhead for the FFT calculations, current devices seem to handle it just fine. There are several free apps that demonstrate this using the device microphone, but it is just as useful at higher frequencies (though you could connect an audio mike if needed).
I run into cases where a spectrum analyzer is necessary. If I am looking for harmonics or jitter in a signal, this is very handy. This would extend the Pokitmeter further into the realm of professional users.
I particularly use the following views:
- Octave RTA
- FFT Plot
- Spectrograph or Waterfall plots
Just a thought - russg
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