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Can anyone find any sources indicating whether this interference has been tested or measured? The FCC decided to auction off the 5G spectrum for fast data usage

by zugi 5y ago

Can anyone find any sources indicating whether this interference has been tested or measured? The FCC decided to auction off the 5G spectrum for fast data usage almost 5 years ago, one would think there'd be a study or experiment or two since then. Several months ago when the grumbling got loud, all the articles seemed to talk about "potential" interference, and despite the FAA having an $18 billion annual budget, and Boeing and Airbus and airlines having bigger budgets than that, and having almost 5 years notice, I got the distinct impression that no one had bothered to do any tests. But they took to the media to raise the alarm about "danger" instead. I'm actually hoping to be proven wrong here - please point me to some experiments or test results!

tjohns 5y ago
Yes, the RTCA did a study back in 2020 which identified the interference from 5G towers was outside tolerance for the aircraft equipment: "The extent of the RF interference is summarized by the worst-case exceedance of the safe interference limit of radar altimeters by expected 5G signals in the 3.7–3.98 GHz band: 14 dB for commercial transport airplanes, 48 dB for business, regional, and general aviation airplanes, and 45 dB for helicopters. Further, the impacts are not only limited to the intentional emissions from 5G systems in the 3.7–3.98 GHz band, but also the spurious emissions from such systems within the protected 4.2–4.4 GHz radar altimeter band directly. In this latter case, the worst-case exceedance of the safe interference limit is 28 dB for business, regional, and general aviation airplanes, and 12 dB for helicopters." https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-Interference-Assessment-Report_274-20-PMC-2073_accepted_changes.pdf https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-In...
- zw123456 5y ago
  finally, one person who read it.. but really, it's the phones on the plane that are the problem, because they are closer.
zw123456 5y ago
ya, been posted many times and ignored of course https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-Interference-Assessment-Report_274-20-PMC-2073_accepted_changes.pdf https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-In...

by zugi 5y ago

tjohns 5y ago

Yes, the RTCA did a study back in 2020 which identified the interference from 5G towers was outside tolerance for the aircraft equipment: "The extent of the RF interference is summarized by the worst-case exceedance of the safe interference limit of radar altimeters by expected 5G signals in the 3.7–3.98 GHz band: 14 dB for commercial transport airplanes, 48 dB for business, regional, and general aviation airplanes, and 45 dB for helicopters. Further, the impacts are not only limited to the intentional emissions from 5G systems in the 3.7–3.98 GHz band, but also the spurious emissions from such systems within the protected 4.2–4.4 GHz radar altimeter band directly. In this latter case, the worst-case exceedance of the safe interference limit is 28 dB for business, regional, and general aviation airplanes, and 12 dB for helicopters." https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-Interference-Assessment-Report_274-20-PMC-2073_accepted_changes.pdf https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-In...

zw123456 5y ago
finally, one person who read it.. but really, it's the phones on the plane that are the problem, because they are closer.

zw123456 5y ago

ya, been posted many times and ignored of course https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-Interference-Assessment-Report_274-20-PMC-2073_accepted_changes.pdf https://www.rtca.org/wp-content/uploads/2020/10/SC-239-5G-In...