Posts
Carlos’ Illustrated Radio Listening Report and Recording of CGTN (October
13, 2025)
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Many thanks to SWLing Post contributor and noted political
cartoonist, Carlos Latuff, who shares the following illustrated radio
listening report of a rece...
3 hours ago
And that is why it works so well with SSB. NOT. With suppressed carrier the envelope is there but there is nothing to mix with (no reference) so the result is shear distortion. Life is so much simpler with AI !!
ReplyDeleteDon, ND6T
Hello Don: Yea, we are very fortunate that the envelope in an AM signal corresponds to the AF modulating signal. This lets us envelope detect: We just rectify it, run it through a Low Pass filter then a cap and -viola! -- AF. As you note, this does not work with SSB. Here the envelope does not correspond to the modulating signal. So we have to use product detectors. 73 Bill
DeleteI don't think you can use AI as support in a discussion like this. As I understand it what you get is just a reflection of the majority written views on the subject.
ReplyDeleteScience should not work on consensus because if it did all progress would stop because we could convince ourselves we already know everything.
Personally I am becoming suspicious of anything that AI plays a part in. AI is already well on the way to ruining Youtube and similar services. The amount of BS you can see on Youtube now is just amazing. Often its got great graphics or pictorial content but no one seems to do any quality checking because often its pure nonsence.
Well, I chose to use AI! I wrote, "I know that AI sometimes gets it wrong, but I think that on this one, it has it right." Just like the people who wrote the underlying web sites, sometimes AI gets it wrong. Would you be happier if I went to the underlying web sites and dug info up there?
DeleteTo move forward on this issue I think we need experimental evidence rather than reference to written sources unless those sources refer to experimental evidence.
DeleteWe (society) seem to have reached the point that Issac Asimov forecast in his great series of Foundation books written so long ago where research relies on reference to written text (rather than experiments). AI can't provide evidence unless we carefully frame the question in such a way that we tease out new knowlege hidden in existing knowlege. Perhaps if we asked AI for proof that detection works from rectification rather than mixing it might provide some help. I would do this but due to my distrust of AI would not know how to start.