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Tag: interference

  • An Unlikely Casualty of the 5G Revolution: Weather Forecasting

    An Unlikely Casualty of the 5G Revolution: Weather Forecasting

    Science journal Nature is reporting that accurate weather forecasting may be an unintentional casualty of 5G deployment.

    At the heart of the issue is the frequencies that have been approved for use in 5G networks, specifically frequencies around 23.8 GHz. Evidently, “water vapour in the atmosphere naturally produces a weak signal at this frequency, which satellites use to measure humidity. Those data feed into weather forecasts. But if a 5G station is transmitting a signal near the 23.8-gigahertz frequency, a weather satellite might pick it up and interpret it as water vapour. And that bad data could degrade forecasts.

    “Meteorologists say that the problem is manageable, but only if there is enough of a noise buffer between the 5G transmissions and water-vapour signal. The buffer is measured in units of decibel watts, and is akin to a measure of how much you might turn down your stereo volume so as not to bother your neighbours.”

    Currently, there is debate about how much buffer is required. Understandably, the World Meteorological Organization is calling for the largest buffer at -55 decibel watts. On the other end of the spectrum, the United States is calling for just -20 decibel watts. The European Union is in the middle, having settled on a buffer of -42 decibel watts, 150 times less noise than the U.S. is allowing.

    The agreement reached by the various entities stipulates a -33 decibel watt buffer till September 1, 2027. After that, it increases to -39 decibel watts. The goal with the two-stage regulation is to give companies time and opportunity to roll out 5G without burdening them unnecessarily. Once 5G is established and more widespread, then regulation will become stricter to make sure the denser 5G transmissions don’t cause more interference.

    Some experts are not convinced that will be enough, however.

    “The race for 5G is going to go fast,” says Renee Leduc, Founder and Principal of Narayan Strategy in Washington DC. “In the early to mid-2020s we’re going to see a very quick uptick.” Despite the stricter regulations in 2027, Leduc says: “I’m still really concerned about the time period between now and then.”

    Nature says increased cooperation between meteorologists and the wireless industry may be necessary. Turning off or redirecting 5G transmissions while a satellite is taking measurements may be a compromise solution.

    Whatever the case, whatever solutions and regulations are put in place, only time will tell how much 5G interferes with accurate weather forecasting.

  • The Skies Get Friendlier As FAA Relaxes Rules on PEDs

    As expected (in fact, a bit earlier than expected), the days of airplane passengers being forced to power down all of their portable electronic devices during takeoff and landing are officially behind us.

    Well, maybe not immediately – but by the end of this year you can expect to hear nothing but silence when a flight attendant spots you in the middle of an intense Angry Birds session mid-takeoff.

    The Federal Aviation Administration has just announced that their exploratory panel has made a final determination to “safely expand passenger use of Portable Electronic Devices (PEDs) during all phases of flight.” They will immediately recommend these new guidelines to all airlines.

    What does this mean, exactly?

    It means that you no longer have to power down your cellphones, tablets, and e-readers during landing and takeoff – it’s that simple. The agency has concluded that most commercial airplanes can handle any radio interference such devices could emit, and once a specific airline decides that their fleet can tolerate the use of PEDs at any altitude, passengers are a go to use them as they see fit.

    Except for making calls, which will still be banned. All devices must remain in airplane mode or have cell service disabled (in instances when using on-board Wi-Fi).

    The ruling is pretty much universal, in that there are very limited exceptions:

    In rare instances of low-visibility, the crew will instruct passengers to turn off their devices during landing. The group also recommended that heavier devices should be safely stowed under seats or in overhead bins during takeoff and landing.

    “I commend the dedication and excellent work of all the experts who spent the past year working together to give us a solid report so we can now move forward with a safety-based decision on when passengers can use PEDs on airplanes,” said FAA Administrator Michael Huerta.

    For frequent flyers, this decision is a long time coming. Hell, let’s be honest – even infrequent flyers were sick of being told to shut down their iPads twice per flight. Thumbs up to The White House for this West Wing joke in response to the FAA’s announcement…

    You may remember Toby Ziegler lamenting the current consensus on PEDs on flights, saying,

    “We’re flying in a Lockheed Eagle series L1011. It came off the line 20 months ago. It carries a Sim-5 Transponder tracking system. Are you telling me I can still flummox this thing with something I bought at Radio Shack?”

    The answer to that question is probably not. And the FAA, with its decision, has finally caught up to an ever-connected world.

    “We believe today’s decision honors both our commitment to safety and consumer’s increasing desire to use their electronic devices during all phases of their flights,” said Transportation Secretary Anthony Foxx. “These guidelines reflect input from passengers, pilots, manufacturers, and flight attendants, and I look forward to seeing airlines implement these much anticipated guidelines in the near future.”

    Image via Brian Herzog, Flickr

  • FAA Ready to Lighten Up on Electronics

    By next year, you shouldn’t have to power down all of your electronics when you board an airplane in the United States. As expected, the FAA is close to adopting new, relaxed rules for portable electronic devices on commercial flights.

    As of now, all electronic devices (including ereaders, tablets, and phones) must be powered down prior to takeoff and on landing – even those in “airplane” mode. The rules have been around for a long time, but have become a point of contention for a more increasingly tech-dependent population over the last couple of years – especially considering the Federal Aviation Administration’s refusal to budge on policies that are hotly contested in the scientific community and generally panned by flyers.

    Here’s what the FAA said earlier this year (and what they’ve said for the past few years as well):

    “The technology for portable electronic devices (PEDs) has been around for many years and is still used in today’s electronics, but there are many uncertainties about the radio signals the devices give off. Even PEDs that do not intentionally transmit signals can emit unintentional radio energy. This energy may affect aircraft safety because the signals can occur at the same frequencies used by the plane’s highly sensitive communications, navigation, flight control and electronic equipment.”

    Despite these assertions, public sentiment against the bans and a strong push from some high-profile voices led the FAA to announce that they were at least going to consider easing up a bit on the restrictions for portable electronic devices.

    “The FAA recognizes this is an area of intense consumer interest, so the agency has brought all the important stakeholders together to facilitate a discussion on this issue…The goal is to help air carriers and operators decide if they can allow more widespread use of electronic devices in today’s aircraft,” said the organization in a June statement.

    Now, The New York Times is reporting that the FAA is nearing a decision – one that will finally allow passengers to operate their electronic devices in a limited capacity at all times during flights. The new rules will let people use their ereaders, phones, and tablets to do things like watch videos, play games, and read books.

    Although the debate over just how much interference commercial flights could see from PEDs is just that – still a debate – the FAA is expected to keep the ban on making phone calls, sending texts, and such during flight. In fact, that portion of the regulations was never really up for a change in the first place.

    The exploratory panel will recommend the relaxed guidelines later this month and the FAA will likely make them official by next year.

    Image via Brian Herzog, Flickr