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Communications Transportation

AM Radio For All Vehicles Legislation Reintroduced (agweek.com) 269

A bipartisan group of legislators has reintroduced the AM Radio for Every Vehicle Act of 2025, aiming to mandate AM radio in all new vehicles at no additional cost. Adweek reports: The AM Radio for Every Vehicle Act was first introduced in May 2023. It continued to take on new co-sponsors through the fall of 2024. It was reintroduced as the AM Radio for Every Vehicle Act of 2025 with 62 cosponsors. Upper Midwest senators showing support for the bill include Sens. John Hoeven and Kevin Cramer R-North Dakota, and Sens. Amy Klobuchar and Tina Smith, DFL- Minnesota.

If enacted, the bill would require the Department of Transportation to issue a rule requiring new vehicles to maintain access to broadcast AM radio at no additional cost to the consumer and provide small vehicle manufacturers at least four years after the date DOT issues the rule to comply. The act also requires automakers to inform consumers, during the period before the rule takes effect, that the vehicles do not maintain access to broadcast AM radio.
"With 82 million Americans tuning in each month, AM radio delivers more than just emergency alerts," says the National Association of Broadcasters in a news release. "It connects communities through hyper-local content, including news, weather and diverse cultural programming," according to a news release from the National Association of Broadcasters."
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AM Radio For All Vehicles Legislation Reintroduced

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  • by locater16 ( 2326718 ) on Friday January 31, 2025 @02:06AM (#65131853)
    - millenia old US Senators introduces legislation to mandate car roads and highways be maintained across the US at all times, despite teleportation having been perfected centuries ago. Reached for comment the lead Senator of the legislation stated "danged whippersnapper!" and then proceeded to temporarily die from their 123rd recorded heart attack before being revived by their robot assistant.
    • Re: (Score:2, Informative)

      by Rei ( 128717 )

      As radio signals are extremely weak at the receiver, and AM is based on changes in amplitude (not frequency), electric motors - which only put out tiny amounts of EMF, but tend to do so at given frequency bands for a given motor speed - can add annoying buzzes to it.

      It's not impossible to overcome - further shielding helps, as do digital broadcasts - but most EV and hybrid manufacturers see no point to trying to keep alive a dinosaur tech that's not that popular. Most AM stations and popular shows stream o

      • Re:The year is 3099- (Score:5, Informative)

        by Pentium100 ( 1240090 ) on Friday January 31, 2025 @03:14AM (#65131921)

        so it's easier and vastly higher quality to just add streaming to the cars.

        AM and FM radio is free to listen. Is streaming free? Does it work in the same areas that AM radio works in?

        • It's free but I haven't listened in years. Nothing but song rotations that haven't changed in 30 years and commercials for ambulance chaser lawyers.

      • Re:The year is 3099- (Score:5, Informative)

        by MacMann ( 7518492 ) on Friday January 31, 2025 @03:17AM (#65131927)

        It's not impossible to overcome - further shielding helps, as do digital broadcasts - but most EV and hybrid manufacturers see no point to trying to keep alive a dinosaur tech that's not that popular. Most AM stations and popular shows stream online anyway, so it's easier and vastly higher quality to just add streaming to the cars.

        Right, and by removing the AM radio from vehicles the automakers can be "sloppy" with their shielding of electronics and get new car buyers to sign up for some kind of subscription service to make up for it, and get a cut of the service fee as a result of course. They can go cheaper on the manufacturing, add fees for subscriptions or a special order on an AM radio add-on, to make money on both ends of the deal.

        If people want higher quality audio then they can still get cellular or satellite service in their vehicles. If they have an EV with improper shielding then they can't even bring a portable AM radio in the EV and expect reliable reception. Part of the AM radio requirement will force the EV makers to put in the effort on proper shielding so their own AM radio works, and it has the side benefit of minimizing interference to adjacent vehicles.

        Another side benefit is this will mean less interference with 2-way radios like CB, ham, GMRS, and business/emergency bands should people want a 2-way radio for emergency communications or as part of their job.

        • by Teun ( 17872 )

          Part of the AM radio requirement will force the EV makers to put in the effort on proper shielding so their own AM radio works, and it has the side benefit of minimizing interference to adjacent vehicles.

          Exactly!

        • It's not impossible to overcome - further shielding helps, as do digital broadcasts - but most EV and hybrid manufacturers see no point to trying to keep alive a dinosaur tech that's not that popular. Most AM stations and popular shows stream online anyway, so it's easier and vastly higher quality to just add streaming to the cars.

          Right, and by removing the AM radio from vehicles the automakers can be "sloppy" with their shielding of electronics and get new car buyers to sign up for some kind of subscription service to make up for it, and get a cut of the service fee as a result of course. They can go cheaper on the manufacturing, add fees for subscriptions or a special order on an AM radio add-on, to make money on both ends of the deal.

          If people want higher quality audio then they can still get cellular or satellite service in their vehicles. If they have an EV with improper shielding then they can't even bring a portable AM radio in the EV and expect reliable reception. Part of the AM radio requirement will force the EV makers to put in the effort on proper shielding so their own AM radio works, and it has the side benefit of minimizing interference to adjacent vehicles.

          Another side benefit is this will mean less interference with 2-way radios like CB, ham, GMRS, and business/emergency bands should people want a 2-way radio for emergency communications or as part of their job.

          Your points in support of this law are primarily regarding its side benefits. If you want to see EVs being less sloppy in their shielding, pass a law that mandates it. Otherwise you run the risk that manufacturers cynically comply with the requirement: the AM radio feature gets buried 4 menu layers deep, and shielding is improved the minimum amount required to barely pick up a strong signal.

          Not sure why your post was downmodded. I don't really agree with you but it's a reasonable comment.

        • by Rei ( 128717 )

          Nobody is looking to reduce shielding. It's a question of whether you want to haul around a bunch of extra mass pointlessly beyond the motor casing.

          The amount of EMF involved is truly tiny. It's only relevant because the power of received AM radio signals is also truly tiny, and the motor EMF is being created right near the receiver and at frequencies that are bad for a given AM radio signal.

          This isn't something that affects anything other than AM radio. AM radio (and non-radio AM broadcasting) has a rea

        • You can't base legislation on what you get to get from ancillary benefits. If more shielding is needed (it is not) then there should be legislation to increase shielding. As it is, car manufacturers could come up with way to do this which you have not anticipated. Directional shielding, for example, which would work well enough for the radio but which would not produce the result that you're looking for.
      • by Teun ( 17872 )
        My Nissan Ariya (an EV) has AM and it works, this means other manufacturers can do it.
        A different problem is here in Europe there are hardly any AM stations left to listen to, mostly are a local 'hobby' project with only 50 to 100 Watts output.
      • Re:The year is 3099- (Score:5, Informative)

        by Smidge204 ( 605297 ) on Friday January 31, 2025 @04:55AM (#65132043) Journal

        As an owner of an EV who, on longer drives, will listen to AM radio for traffic updates, I ask you "What the fuck are you talking about?" Hell the station I listen to has both AM and FM simulcast and the AM version comes in clearer than the FM as long as I'm not under a bridge.

        EV inverter switching frequency tops out at 10KHz [eomys.com]. AM radio broadcasts are all above 500KHz [gsu.edu]. There is no issue here and anyone who is saying it's so bad they want to abandon AM radios in electric vehicles is flat out lying.

        Maybe you're thinking of brushed motors where the commutator sparks and generated broad spectrum EMF? That's a real thing, but not applicable to EVs.
        =Smidge=

        • by Rei ( 128717 )

          The waveform sent to the motor by the inverter isn't generated continuously. It's comprised of IGBTs or MOSFETs firing brief pulses. SiC MOSFETs switch at hundreds of kHz, and there's harmonic side bands.

          • > SiC MOSFETs switch at hundreds of kHz

            No, they switch at 10KHz or less. If you're talking about the effective AC frequency in the motor coils, you're talking maybe 400Hz tops.

            =Smidge=

            • by Rei ( 128717 )

              It's IGBTs that are in the 10-20kHz range. SiC MOSFETs commonly switch at 100-200kHz.

              • No, I'm thinking of SiC.

                Even though SiC is capable of switching faster, that does not mean they are used that way. EV inverters only operate at 10KHz regardless of what the hardware is capable of. See source linked in my original reply.

                The reasons SiC has become the popular choice have nothing to do with switching speed;

                - Lower switching losses
                - Lower conduction losses
                - Better thermal conduction and higher heat tolerance
                - Higher breakdown voltage

                All of these advantages allow for higher power inverters in sm

                • by Rei ( 128717 )

                  Your link is from 2021, and its data was dated for even then. Note the "?" next to the Tesla Model 3 (their info on the Y is wrong, it uses the same powertrain as the 3)? The Model 3 was the first mass-produced EV to use SiC MOSFETs rather than IGBTs (released low volume in mid 2017, scaleup through 2020); it took several years for other manufacturers to start switching over. Nowadays SiC MOSFETs dominate. IGBTs switch at 10-20kHz, SiC MOSFETs at hundreds of kHz [emobility-...eering.com].

                  Ref: [researchgate.net]

                  In 2017, Tesla used SiC MOSFETs po

            • by Khyber ( 864651 )

              Uh, no, for efficiency, SiC switches around 500-600KHz. You're thinking regular silicon.

        • They use low power translators for FM with shit coverage.

          Narrow band FM in the AM band at the same power would be superior. AM modulation is terrible, even though AM radio as a package is superior.

        • Re:The year is 3099- (Score:4, Informative)

          by serviscope_minor ( 664417 ) on Friday January 31, 2025 @09:13AM (#65132361) Journal

          EV inverter switching frequency tops out at 10KHz. AM radio broadcasts are all above 500KHz.

          Yeah that's the switching though, but the edges are a fair bit sharper. Plus over here AM goes all the way down to 150kHz. It's surprising how badly power switching can piss harmonics all over the spectrum.

      • There will be times when the car is parked when AM should work, so i hope they keep AM/FM radios in the EV cars
      • by dbialac ( 320955 )

        It's not impossible to overcome - further shielding helps, as do digital broadcasts - but most EV and hybrid manufacturers see no point to trying to keep alive a dinosaur tech that's not that popular. Most AM stations and popular shows stream online anyway, so it's easier and vastly higher quality to just add streaming to the cars.

        I live in a rural area. FM and HDTV doesn't work very well here in the mountains and cell service is often completely unavailable. The TV tower that isn't far from where I live can't provide a picture to my house because a mountain blocks it, even though the tower is located on the highest nearby peak. Cell service cuts out all over the place and there are vast areas without cell towers. The costs involved in setting up and operating an FM transmitter or cell tower are also greater than they are for an AM t

      • Re: (Score:2, Insightful)

        by RobinH ( 124750 )
        Let's speak plainly. This is not so much to do with EV manufacturers, and everything to do with the fact that there's more right-wing content on AM radio, so it's a political issue.
      • If whatever your doing is wiping out the AM band then it is no longer FCC compliant for either computing devices, part 15, industrial unintentional radiators you name it it's not legal RF and it's going to be interfering with a host of other radio services and devices that are not readily apparent from Grandma's electric organ to garage doors.

        Not to mention those nearby who actually want to listen to AM radio. There are stations that carry ESPN/Sports which is still very popular.

      • All of this is true but there are ways to improve it. The US's HD Radio non-standard (similar to the EU's DRM but without the name that's scary to FOSS people and different because America) places a digital overlay over each AM station that provides a relatively high quality digital version of the same channel, which wouldn't be affected by the car's electronics. Maybe rather than spending a lot of money on shielding, they should just throw in an HD Radio receiver in each car. They'd probably be doing it wi

    • - millenia old US Senators introduces legislation to mandate car roads and highways be maintained across the US at all times, despite teleportation having been perfected centuries ago. Reached for comment the lead Senator of the legislation stated "danged whippersnapper!" and then proceeded to temporarily die from their 123rd recorded heart attack before being revived by their robot assistant.

      Yes, you're absolutely right. Advanced tech infrastructure never suffers long-term outages, or fails or falls victim to sabotage. Critical communications and other services never require primitive-but-more-resilient fallbacks.

      Now imagine for a moment that you're in some vaguely post-apocalyptic scenario. Would you rather be trying to jury-rig communications via an FM transmitter, rather than an AM transmitter which could be as basic as On Off Keying? And would you rather be using tech whose frequency allows

    • All because their right wing extremist programs somehow rarely if ever last long on FM.
  • AM (Score:4, Insightful)

    by Anonymous Coward on Friday January 31, 2025 @02:12AM (#65131855)
    Is all extreme far-right, Christian nonsense and Spanish stations.
    • by Sique ( 173459 )
      To be fair, radio in the U.S. is generally unbearable. When I am getting a rental car in the U.S., the first thing I do is switching off the radio.
      • AM radio always provides entertainment on long journeys - the joy of continually retuning to try and find a station that isn't religious / demented far-right / foreign-language / country music. Or all four.
    • by dohzer ( 867770 )

      Maybe in the US it is, but not here.

    • Don't forget local news, agricultural news, and various public interest things. But then again, I drive through the middle of the country on long drives, so perhaps it's different where you live. Or maybe this is what CNN told you.
  • Provide a battery-powered AM radio in with the jack and air compressor, for your emergency.
    • Provide a battery-powered AM radio in with the jack and air compressor, for your emergency.

      Include a powered USB plug and USB-C power/audio out capability and you have all the functionality required; except now all those AM radio station owners would lose their audience who listens while driving. Of course, the big ones, like iHeartRadio, are streaming already.

      If the are worried about the EBS, a better system would be to mandate all cell phones include an operational AM receiver, since that doesn't tie you to your car and would provide AM notification if cell service is unavailable..

      • A hand crank would probably be nice to have as well so a dead battery isn’t the end. But for emergency use there is no interference problem really, you simply stop driving and do not use the motors. Inconvenient? Yea but it’s not going to be much of an issue for the area disaster that could stop cell phone and local FM broadcast.
    • Even better, a coil of wire, a long antenna, a germanium diode, and an earphone.

  • America (Score:5, Interesting)

    by Powercntrl ( 458442 ) on Friday January 31, 2025 @02:53AM (#65131901) Homepage

    ...where charging standard compliance is voluntary, but including an AM radio is legally mandated.

    Ironically, my brother just experienced his first time attempting to road trip in an EV (the company he works for has him use a rental vehicle when he's scheduled to make longer trips within the state) and it was a miserable experience. It was last week when Florida was having that unusually cold weather that he'd texted me and asked why the Mustang Mach-E he'd just picked up had burned up 20% of its charge driving just from the rental place to his home. Being something of the EV guru in the family, I explained to him that if he was running the heat (which he was), that'd chew through the battery faster than Trump with a hamberder. He also asked me how to recharge it and I told him that since it's not a Tesla, his two options are either borrowing my NACS to CCS1 adapter and using Tesla's Superchargers, or just using Google maps to search for CCS EV fast chargers along his route and hoping they're not broken. Of course, I also threw in that charging on-the-go isn't something I frequently have to deal with since I have charging at home.

    He arrived at his hotel in Tampa with about 18% battery remaining and it turned out the hotel only had Tesla destination chargers, which requires an entirely different sort of NACS adapter (NACS to J1772) than the one I'd loaned him. Oops. I text him back and tell him to go to a nearby Supercharger where the adapter I loaned him actually would do him some good, where unfortunately he then discovers that there's something wrong with the car itself regarding its ability to DC fast charge. Still unwilling to throw in the towel, he then tries an Electrify America charger with the same result of the car failing to charge. Defeated, he returns to the hotel with a nearly-dead EV and ends up calling the rental company in the morning to swap the car out for one that runs on gas.

    All his strife could've been avoided if we'd standardized on charging standards years ago. But yeah, including AM radios is truly something we need to make sure the automotive industry gets right. /s

    • Unfortunate, yes. Irony, no.
    • by AmiMoJo ( 196126 )

      It's sad that charging infrastructure in the US is so bad. The market has failed to deliver, yet again. So instead of legislating to fix that, you get AM radios. In fact Trump has withdrawn what little help there was to improve public charging.

      • Re:America (Score:4, Informative)

        by ArchieBunker ( 132337 ) on Friday January 31, 2025 @09:09AM (#65132345)

        Welcome to the USA. Where the government doing anything at all is considered bad. This message brought to you by the people employed by the government with an (R) in front of their name.

        What happens with a lot of public chargers is a company makes a deal with say a hotel to install them for a cut of the profit. They get installed and the company is responsible for maintenance. So if and when they break the hotel can't do anything but report it to the company. That and all these companies make you install their shitty payment app. God forbid you swipe a credit card like a gas pump.

    • Re:America (Score:5, Insightful)

      by PsychoSlashDot ( 207849 ) on Friday January 31, 2025 @06:42AM (#65132151)

      All his strife could've been avoided if we'd standardized on charging standards years ago. But yeah, including AM radios is truly something we need to make sure the automotive industry gets right. /s

      To be fair, that's incorrect. All his strife could've been avoided if he hadn't been given a defective rental car. All a single standard would have done is revealed the car was broken sooner.

      AM radio is a standard that is being removed so the manufacturers can shave a buck. You know you can get a portable AM radio for peanuts, so it's not a lot of money here. And most radios these days are software-defined is my understanding. This is really more about removing AM, then FM, so the partnerships with satellite radio subscription companies becomes the only choice.

      My local news station is AM. It's not political or religious... it's just local news & weather and talk about local issues. So I listen to it in the car. For music, sure, I've got modern goodies. But sometimes I'm interested in actually knowing what's going on.

      • by Viol8 ( 599362 )

        "And most radios these days are software-defined is my understanding"

        Software only gets you so far. At the lowest level you still need physical hardware that can actually pick up frequencies that low.

    • Even here in the UK - tiny size wise compared to the USA - plenty of EV users still get range anxiety because of the piss poor charging infrastructure that even if it is installed might either be so busy you have to queue for an hour or more first , or its broken, or it requires some damn app which you have to sign up for.

      That hasn't stopped politicians mandating the end of ICE car sales by 2030 (hybrids by 2035). Meanwhile the same dimwits didn't bother to mandate EV charging installations on major routes

    • Mach E is a worst case. It's the new Leaf. One of my coworkers got one and even just in our temperatures at the time (which never dipped below the forties even for a second) his range was cut in half. There is something tragically wrong with the battery in that vehicle and Ford won't admit it, because they would be harangued into a recall.

    • by flink ( 18449 )

      It was last week when Florida was having that unusually cold weather that he'd texted me and asked why the Mustang Mach-E he'd just picked up had burned up 20%I of its charge driving just from the rental place to his home. Being something of the EV guru in the family, I explained to him that if he was running the heat (which he was), that'd chew through the battery faster than Trump with a hamberder.

      If that is the case then the Mach-E has a particularly inefficient climate control system. Last night I drove from Boston, where temperature was in the mid teens, to rural Maine, where it was 5F, for a distance of ~180mi. I ran the heat the whole time at 72 (and this was an actual 72, not the car-managed "eco" heat mode). The drive train consumed 53kWh and climate control 6kWh, so a little more than 10%. However, regenerative braking recovered 7kWh, so more than climate control consumed. I stopped about

  • What a terrible idea (Score:2, Informative)

    by charrois ( 4015817 )
    If they are honest in saying that 82 million Americans tune into AM radio each month, the market would speak for itself, and those consumers wouldn't buy a vehicle unless there was an AM radio in it, without requiring legislation. If you need legislation to require it, it means, plain and simple, that the demand isn't there. And besides, who really listens to radio any more (AM or FM) with all the streaming services available now? If you want to promote your content, rather than draconian legislation for
    • And besides, who really listens to radio any more (AM or FM) with all the streaming services available now?

      Why would I want to drive around with a long internet cable plugged into my car. My wifi does not go very far.
      It's radio or a tape for me.

    • If the auto manufacturers want to kill AM, they'll do it and tell consumers to shove it. Especially since the current overlap between AM radio listeners and EV drivers is probably not that large.

    • So effectively, you believe that if AM radio is removed, the price of the car will go down?

      Hahahaha... no.

      If you need legislation to require it, it means, plain and simple, that the demand isn't there.

      I wanted a base model with an optional heated steering wheel. Well, they don't allow you to just swap the steering wheel to add that feature, or even order a comfort package. The only option was to go up to the ultra-luxury edition of the whole car which was $8,000 more than the base model. Screw that. I settled for the base model and invested in some nice driving gloves.

      Standard market demand does

    • If they are honest in saying that 82 million Americans tune into AM radio each month, the market would speak for itself, and those consumers wouldn't buy a vehicle unless there was an AM radio in it, without requiring legislation. If you need legislation to require it, it means, plain and simple, that the demand isn't there.

      That's not true. First of all, a manufacturer won't know that a buyer has gone with a different manufacturer because of the lack of AM radio. It's one of thousands of features in a car and the feedback will never make it where it needs to go.

      Secondly, because it's a relatively minor feature, many people will accept a car without AM because it has so many other things they do want. Doesn't mean the consumer is happy. Doesn't mean the consumer doesn't want AM. Just means that the $50,000 purchase they'

    • Privatize the profits and socialize the losses. Same old story.

    • This is why cell phone manufacturers removed headphone jacks from their phones...nobody wanted them and nobody used them. Demand just wasn't there.
    • by dbialac ( 320955 ) on Friday January 31, 2025 @09:41AM (#65132435)
      I bought a cell phone without a headphone jack because there wasn't one with one because some douchebag reviewer thought that a "modern" phone was better without one, not because I had an option. I bought a cell phone without a physical keyboard, not because I didn't want a touch screen, but because some douchebag reviewer thought that a "modern" phone was better without one. I'm not alone and there's a significant market for phones with both of these features.
  • by ledow ( 319597 )

    Meanwhile... in the rest of 2025... the world moved on and all-but killed off AM and FM already.

    • by thsths ( 31372 )

      I am not sure that is better.

      Quite a few countries say they only want to pay for two modes of transmission for public stations. If they count internet streaming, that only leaves space for digital radio.

      And digital radio just does not have enough coverage for driving.

  • Can't wait for Kayne or Taylor Swiffer releasing their stuff on 8-track cassettes again!

  • AM Radio For All Vehicles Legislation

    What about for the afternoons and evenings?

  • Require satellite radio to be an additional cost, with absolutely zero presence in the vehicle's infotainment system if a person chooses not to have it or if they cancel their service.

  • by rally2xs ( 1093023 ) on Friday January 31, 2025 @05:23AM (#65132085)

    It's pollution, this time of the electromagnetic spectrum.

    EV manufacturers want to get away with the equivalent of dumping their toxics in the river, although in this case it is failing to contain the racket that their EV's electric motors make in the electromagnetic spectrum. There is more than just AM radio at stake, although that is enough. You see a sign to tune to 1690 for important highway information, what do you do then? You can't even bring a portable AM radio to hear it because your EV's motors are making so much noise your AM radio receiver only hears static.

    But there is radio communications in the shortwave band, just a few megahertz higher in the spectrum than AM radio, that also gets blocked. Ham radio is there. Mostly that is a hobby, but during some exceptional times of adversity, messages can be passed in no other way. Getting a list of wildfire victims across the mountains to Red Cross headquarters for an event can sometimes have no other means. Such communications requires no other infrastructure, such as cell towers that get burned to the ground in the wildfire. Hams can just string a low to the ground wire, send signals mostly straight up, and communicate for 100 miles without towers in between to repeat the signal. The technique, called Near Vertical Incident Skywave (NVIS), relies mostly on signals in the 80, 60, and 40 meter bands, which are 4, 5, and 7 megahertz, and which can be wiped out by noisy EV motors.

    Additionally, if a hurricane knocks down every broadcast tower in Florida, so there are no radio or TV stations nor electricity to power them, you can still get messages directly to Floridians via AM radio using 50,000 watt transmitters of clear channel radio broadcasting in Atlanta and New Orleans. In this case, size matters, and those transmitters will punch thru the night sky and get information where it needs to be and to whomever needs to hear it. FM radio will not do this, as it is mostly limited to line of sight propagation.

    So lets keep AM radio in our cars, and incidentally do the right thing and keep the industry from, once again, taking the shortcut of simply dumping their inconvenient electromagnetic effluents on the rest of us and let us use the radio spectrum the same way that we've been doing it for the last 100 years.

    • As I said above, if the goal is goal is greater EM shielding then you need legislation for greater EM shielding. You can't introduce legislation for something else and then cross your fingers and hope that's it's implemented in the way that you think it will be.
    • by bigpat ( 158134 )

      Greater Distance, low power, simplicity make AM still a very effective communications protocol. Keep it. And go ahead and mandate it.

    • The spectrum has been polluted for decades already. Triac based lamp dimmers and motors with brushes all play havoc with AM. That stuff has been common place since the 1960s. Simplicity is great but there's a reason why we upgraded from telegraph lines to digital communications.

    • It's pollution, this time of the electromagnetic spectrum.

      EV manufacturers want to get away with the equivalent of dumping their toxics in the river, although in this case it is failing to contain the racket that their EV's electric motors make in the electromagnetic spectrum.

      Electromagnetic interference is in no way comparable to dumping toxic substances into a river.

  • That is laughably naive. SOMEONE ALWAYS PAYS. Usually us.
  • From RadioWorld [radioworld.com]

    "Nationwide, 30.9% of radio reach comes from AM stations, representing 82,346,8000 American radio listeners aged 12+ who listen to AM every month."

    This data in Fall 2022.

    And From Musical Pursuits [musicalpursuits.com]

    "More Americans listen to the radio than use Facebook each week.
    55% of Gen Z in the U.S. listen to AM/FM radio every day.
    Adults listen to 104 minutes of radio per day, 12.2 hours per week.
    Radio industry sees growth through smart speakers and online listening.
    100 million Americans own a smart speaker.
    R

  • They wouldn't care if FM was gone, too. Hook up your phone and listen to Spotify.
  • That may be the number of people in range of a broadcast, but I seriously doubt it has that many listeners anymore.

  • by Dan East ( 318230 ) on Friday January 31, 2025 @10:54AM (#65132599) Journal

    These days RF receivers of that sort are all on a single tiny chip - ROC (Radio on Chip) that are incredibly cheap and can receive a huge part of the RF spectrum and decode both AM and FM. They are so inexpensive that ROCs that are even capable of transmitting as well as receiving are only a dollar or so.

    So from a cost perspective this is absolutely negligible, especially when the ROCs they are using (even if they only expose the FM capability in the radio UI) already have this capability built in.

    From a technical perspective, AM has appeal for a few reasons. It has greater range at a given transmission power than FM. With FM once the signal strength drops below a threshold you lose it, whereas with AM the signal sounds quieter and harder to make out as it gets weaker, but it isn't an immediate drop-off like with FM.

    Additionally, with AM you can hear more than one transmitting station at the same time on the same frequency. With FM the signal with the greatest strength "wins" and is what you hear.

    So AM is very useful for emergency broadcasting and the like. Aircraft still use AM modulation (but at a higher frequency than broadcast AM) for the reasons above. The audio most of us have heard from the ATC and airplanes in the tragic collision in DC yesterday is all AM modulation.

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