this post was submitted on 21 Jun 2023
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Politics

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New electric cars won’t have AM radio. Rightwingers claim political sabotage (www.theguardian.com)
submitted 1 year ago by SeeStars@kbin.social to c/politics@kbin.social
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Conservatives say liberals want to kill talk radio. But there’s plenty else on the AM dial – much of it essential

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[–] debounced@kbin.run 1 points 1 year ago

you will actually hear junk from the alternator in the AM band if the voltage regulator(s)/rectifier goes bad or a ground gets corroded... the lead acid battery provides a nice smoothing function (almost ideal voltage source) since the alternator and engine have a low impedance bond to the negative terminal (system ground). the low frequency spectral emissions (very low harmonic content) from 1 alternator and associated circuitry is a much simpler problem than all the computers, ac inverters (induced high frequency currents running around everywhere), wiring harnesses, etc. that all act as rf generators/antennas.