USA: NO MEDIUM WAVE RADIO ON ELECTRIC CARS?

NO MEDIUM WAVE RADIO ON ELECTRIC CARS
The image illustrating the article by Pilot (which describes itself as: an organization of innovators, educators and advocates dedicated to advancing broadcast technologies and cultivating new media opportunities) shows the screen of the electric Volkswagen ID.4 EV: it allows listening to FM and streaming – but not to AM
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The abandonment of thermic engines is a mandatory goal to reduce CO2 emissions. The automotive industry is getting ready and among the aspects that are being discussed, there is also radio listening. On electric cars, HF interference is generated primarily by the frequency converter, a device that controls the amount of power delivered by the electric motor by turning the voltage on and off thousands of times per second. This generates signals that fall in the medium wave broadcast band: electrical noises (such as distortion and crackling) similar to those emitted by smartphones, TVs, computers, vacuum cleaners and hair dryers. In addition, static electricity, which creates crackles, increases with the power of the motors. So much so that some manufacturers, such as BMW, Mini, Tesla and Volkswagen have eliminated the AM band on their current cars. Others, like General Motors, are studying the problem, but the solution isn’t around the corner. Xperi Corporation, a leading digital radio company, whose HD Radio standard (a patent it owns) is used both in the FM and AM band, claims that its transmission system is not afraid of interference. And it presented test results at NAB Broadcast Engineering and Information Technology, the annual conference of American broadcasters. According to Pooja Nair, an engineer at Xperi Corporation, a fully digital AM signal resists interference much better than an analogue one.

USA: Radio Disney closes

The report in the Argentine daily La Nación points out that Disney’s radio station has helped launch a number of celebrities, including Selena Gomez (pictured).
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In the first quarter of 2021, the Walt Disney Company will close Radio Disney and Radio Disney Country. Opened in 1995, the station owned 23 medium-wave stations to reach a large audience of young people and teenagers, but with the spread of streaming in 2014 most of the stations (22) had been sold and the signal was being broadcast digitally, on satellite and in some HD Radio subchannels. Radio Disney Country, a secondary streaming brand launched in the autumn of 2015, was no longer on AM as of 2017 because the station broadcasting it, 1110 KDIS in Pasadena (Los Angeles) had changed its name and format, becoming KRDC. The end of broadcasting is also caused by the uncertainties of the pandemic about the future of live music events. Thirty-six employees (full-time and part-time staff) will lose their jobs and the Pasadena station will be sold off. The closure does not affect Radio Disney in Latin America.

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