this post was submitted on 21 Jun 2023
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New electric cars won’t have AM radio. Rightwingers claim political sabotage (www.theguardian.com)
submitted 1 year ago by [email protected] to c/[email protected]
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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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[–] [email protected] 1 points 1 year ago (1 children)

Yeah I have AM in my EV as well, though I can't say I've tried it. Plus if the EMF were the actual reason, wouldn't the alternator in ICEs cause similar interference?

[–] [email protected] 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.