Dave, I am well aware (and have been for more than 40 years) the difference between discriminators and detectors. My point is, for the benefit of non-techinicians, that the radio outputs a signal, from a plug-in jack, in response to software (you did look at the picture, didn't you?) from both AM and FM (reportedly) that can be used for analysis. You were arguing, uselessly and with no point, the semantics of what Paul (not a radio technician) said. Everyone with technical radio backgrounds and a lick of common sense knew what he meant, only you decided to harp on the choice of words.It also looks extremely noisy.loumaag said:And yet the sample provided by Paul is clearly ACARS:
A discriminator is a necessary part of a circuit that can demodulate FM. It has no use on an AM signal. There might be a common point in the radio where baseband audio from an FM signal (the discriminator's output) and unprocessed audio from an AM signal are both available, depending on which mode is being received at the moment.
ACARS can be decoded perfectly from speaker or earphone audio. Digital modes sent via FM cannot.
Now that the dead horse has started to smell, leave it alone.