Wonder if any hams are doing HF Mobile operation in a Tesla ??
Mike
WB6DJI
Sent from my iPhone
> On May 22, 2023, at 12:32 PM, James Jordan <k4qpl2@gmail.com> wrote:
>
> From a ham perspective, if AM is allowed to go away, then fighting RFI will
> be left mostly to us and without the AM broadcasters, preventing RFI will be
> considered far less important and our risks increase.
> I’m not a talk radio fan but I guess we take the allies we can get.
> 73,
> Jim K4QPL
>
> Sent from my iPhone
>
>> On May 22, 2023, at 3:20 PM, Charles Coldwell <coldwell@gmail.com> wrote:
>>
>> This was in an email from the New York Times
>>
>> Major automakers are eliminating AM radio from new vehicles, arguing the
>> antiquated system is unnecessary and is incompatible with electric engines.
>>
>> But House lawmakers will convene a hearing in early June to discuss the
>> importance of keeping AM radio in cars, committee spokespeople confirmed
>> exclusively to The Technology 202.
>>
>> House Energy and Commerce Committee Chair *Cathy McMorris Rodgers* (R-Wash.)
>> and ranking Democrat *Frank Pallone Jr.*(N.J.) will hear testimony from
>> public safety experts about why they think AM radio is still essential for
>> vehicles.
>>
>> *The hearing comes as lawmakers in both the House and Senate **sound the
>> alarm*
>> <https://s2.washingtonpost.com/3a1532d/646b712246cd7852d9380726/59730117ade4e21a848908c7/11/73/646b712246cd7852d9380726>
>> *on **AM radio being phased out*
>> <https://s2.washingtonpost.com/3a1532f/646b712246cd7852d9380726/59730117ade4e21a848908c7/12/73/646b712246cd7852d9380726>*,
>> a move they say could prevent Americans from receiving public emergency
>> notifications and stifle political discourse.*
>>
>> AM radio was popular through the 1960s and ’70s, but once FM radio came on
>> the scene, it was able to provide better audio quality at the cost of
>> transmitting across a shorter distance.
>>
>> *The debate has made unlikely alliances, as lawmakers argue that AM is a
>> crucial service that can reach Americans in life or death situations when
>> FM or other transmission methods fail.*
>> <https://sli.washingtonpost.com/click?s=690291&li=technology202&m=6b6f603646bfd6ba3e2649ec9cfef2c2&p=646b712246cd7852d9380726>
>> <https://sli.washingtonpost.com/click?s=690292&li=technology202&m=6b6f603646bfd6ba3e2649ec9cfef2c2&p=646b712246cd7852d9380726>
>> <https://sli.washingtonpost.com/click?s=690294&li=technology202&m=6b6f603646bfd6ba3e2649ec9cfef2c2&p=646b712246cd7852d9380726>
>>
>>
>> - A bipartisan, bicameral bill introduced last week would direct the
>> National Highway Traffic Safety Administration (NHTSA) to issue a rule
>> requiring carmakers to keep AM broadcast radio in their vehicles without a
>> separate payment or fee.
>> - It also requires automakers selling cars without AM radio before the
>> effective date to disclose that AM is not present.
>> - The bill, titled the AM for Every Vehicle Act, has endorsement from
>> Sens. *Edward J. Markey* (D-Mass.) and *Ted Cruz* (R-Tex.), as well as
>> Reps. *Josh Gottheimer* (D-N.J.) and *Tom Kean Jr.*(R-N.J.).
>> - It also has endorsements from Federal Communications Commission
>> Chair *Jessica
>> Rosenworcel* and Republican Commissioner *Nathan Simington*, who call it
>> a “clear public safety imperative.”
>>
>> “AM radio plays an essential role in our communities, especially during
>> public emergencies when other alert systems that rely on the electric grid
>> and cellphone networks may not work. I’m looking forward to the Energy and
>> Commerce Committee holding a hearing on this important matter soon,”
>> Pallone said in a statement to The Technology 202.
>>
>> *Republicans have also argued that popular conservative talk shows that
>> rely on AM airwaves could suffer from the phaseout.* Eight of the country’s
>> 10 most popular radio talk shows are conservative, as our colleague *Marc
>> Fisher *previously reported
>> <https://s2.washingtonpost.com/3a153f8/646b712246cd7852d9380726/59730117ade4e21a848908c7/16/73/646b712246cd7852d9380726>
>> .
>>
>> *AM radio has largely been **discontinued in electric vehicles*
>> <https://s2.washingtonpost.com/3a15330/646b712246cd7852d9380726/59730117ade4e21a848908c7/17/73/646b712246cd7852d9380726>*
>> made
>> by companies like Tesla, Ford, BMW, Mazda and Volkswagen on the grounds
>> that the motors in those vehicles create electromagnetic frequencies on the
>> same wavelength as AM radio and could lead to interference.* Automakers
>> also argue that AM’s phaseout trends with the population that grew up with
>> AM: one that is getting smaller and older.
>>
>> The Alliance for Automotive Innovation, an automaker trade group, has
>> previously
>> said
>> <https://s2.washingtonpost.com/3a1597f/646b712246cd7852d9380726/59730117ade4e21a848908c7/18/73/646b712246cd7852d9380726>that
>> AM mandates are unnecessary and that the Integrated Public Alerts and
>> Warning System can be transmitted across AM, FM and other types of radio,
>> as well as cellular networks in case of an emergency.
>>
>> Former Federal Emergency Management Agency officials in February wrote to
>> Transportation Secretary *Pete Buttigieg*
>> <https://s2.washingtonpost.com/3a15331/646b712246cd7852d9380726/59730117ade4e21a848908c7/19/73/646b712246cd7852d9380726>arguing
>> that the United States should seek assurances from automobile manufacturers
>> to keep AM in new cars.
>>
>> “AM radio plays an essential role in our communities, especially during
>> public emergencies, and we look forward to hearing from public safety
>> experts about the importance of ensuring this continues to be a resource
>> for Americans,” McMorris Rodgers said in a statement to The Technology 202.
>>
>>>> On Mon, May 22, 2023 at 02:34 Jim Brown <jim@audiosystemsgroup.com> wrote:
>>>
>>>> On 5/21/2023 6:11 PM, n0tt1@juno.com wrote:
>>>> Personally, I think it's
>>>> because they don't want to deal with filtering out all those RF
>>>> square waves in the vehicles. Or maybe they know that
>>>> EU is, or has already, discontinued Broadcast AM radio.
>>>
>>> This has been widely reported in the press for several months. I've been
>>> driving a Tesla Model 3 for 2.5 years, and have a VHF/UHF FM rig in it,
>>> no observable RF noise. When looking for installation advice, I came
>>> across several youtube videos from an OT in 5-land who first did that,
>>> then advanced to an HF rig. He reported that to be pretty noise free as
>>> well. The 12V system won't support a lot of power. I've charged at home
>>> from the outbuilding that houses my shack, first from a 120V/15A outlet,
>>> now from 240V/30A, can't hear any noise with my Kenwood TH-F6A
>>> (wide-band RX) probing along the power cable, or in my radios in the shack.
>>>
>>> The Tesla designers were VERY good about RF shielding that's quite
>>> frequency-selective. A talkie with a duck is deaf inside the vehicle,
>>> but cell phone works great inside the vehicle at knee level in the
>>> center pedestal (and, of course, in my pocket).
>>>
>>> As to RFI to the AM band -- I haven't probed that, but no issues on 160M
>>> when charging.
>>>
>>> Vehicles are sold worldwide, so discontinuance of AM broadcasting in any
>>> large market could drive mfrs to drop AM in vehicles. AM has been on a
>>> long downward spiral for several decades, and noise has long been a
>>> problem. A colleague was chief engineer at WLS in the '80s and '90s
>>> (maybe longer, don't remember when he retired). Their 50kW clear on 890
>>> kHz was maybe 25-30 miles S of Chicago, and had chronic complaints of
>>> ignition noise from Fords that wiped them out in the northern suburbs --
>>> I'm guessing 50 miles or so from their omni stick. And as we all know,
>>> noise has increased exponentially in the intervening decades, and the AM
>>> band takes the greatest hit.
>>>
>>> Starlink, a related company, is quite the opposite. The PSU for my dish
>>> is mondo-noisy, took a half-dozen ferrites with multiple turns to quiet
>>> it down. I love that system, which I bought as redundancy for ComCast,
>>> whose power backup was next to non-existent. They've since improved
>>> quite a lot. But with no cell service in the mountains, we can't be
>>> without internet, so it's great to have both systems.
>>>
>>> 73, Jim K9YC
>>>
>>> 73,
>>>
>>>
>>> _______________________________________________
>>> RFI mailing list
>>> RFI@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>>
>> --
>> Charles M. Coldwell, W1CMC
>> Belmont, Massachusetts, New England
>> "Turn on, log in, tune out"
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