Republicans also believe in free speech, as well as national safety and security.
I would agree that's been the mantra in the past. Recently? I'm not sure what they believe.
Keeping AM radio in car soundsystems costs pennies compared to other government mandates.
However, the government isn't paying for the additional shielding and other changes to the vehicle for allowing a mostly unused feature to exist on modern vehicles. Maybe the automakers should send lawmakers the bill.
And the Federal government has tons of mandates on automobile and other vehicle design as well as equipment. You can't have a car or truck on the road if it hasn't passed some government muster
But that's all safety-related mandates. Allowing for AM radio, which most people under 55 have largely forgotten, is not an occupant safety feature.
"Free market" principles only go so far with road vehicles. Even under Republican governments.
Especially, as mentioned, it involves a potential reduction in political rhetoric.
Redundancy in emergency communications systems is better than non-redundancy, especially when it costs pennies on the dollar to provide for the extra emergency communications medium.
But I've seen no recent examples where radio, AM, or FM can provide emergency communications, especially after hours or on weekends. If the local authorities have forgotten, or don't activate EAS with relevant information, AM is usually just rolling whatever talk or religious programming.
Most AM listening is in cars. The portable radio issue is a straw man. Even FEMA acknowledged that most AM listening during a massive catastrophe (like the Juan De Fuca earthquake) would be in vehicles. Shutting down radio stations just because you think it's a great idea would go against the First Amendment as well as the Fifth Amendment's takings clause, being that AM radio stations are businesses, and forcing them to shut down without due process and/or adequate compensation would be Constitutionally problematic.
I've not heard any talk about a required shutdown of AM stations. Not sure where you're getting that impression.
So your suggestion that the cost would be 'minimal' really isn't how it would play out. Right now there are around 4K AM stations in the US. Even if the total cost would be minimal when compared to the Federal budget, if enough stations insisted on due process (i.e., they ought the taking in court) it would cost the Federal government a lot more than just leaving things be.
But you aren't privy to what it costs to harden or keep AM radio in modern vehicles. If you had to write the check, I'd bet you would see it differently.
Agreed on #4, although it would cost the car companies more to add the programming than just keep AM available, as is, in the car soundsystems.
As I understand that issue, it isn't turning AM on an SDR, but the extra shielding required to keep EV speed controllers and other electronics from making the reception difficult and excessively noisy. Again, you're assuming without all the information.
FM may be on the chopping block in a few years, as removing all radio from cars could save the automakers some money.
FM frequencies aren't burdened with the susceptibility of noise that the AM/MW band is.
Bluetoothing your phone into the soundsystem is cheaper for car companies than having the FM / AM chip, audio chip, the extra programming needed to include the Radio into the interface, as well as the antenna and extra wiring needed for FM as well as AM.
Considering it's all wrapped up in the same system, that's not necessarily true.