General > General Technical Chat
5G versus commercial aircraft Radio Altimeters in the US, wtf?
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Ed.Kloonk:

--- Quote from: Stray Electron on January 19, 2022, 02:46:09 am ---

   I wonder what's going to happen when the first airplane crashes in the US and the authorities even suspect that 5G was the cause???  I foresee the 5G system getting shutdown totally and a lot of wankers will suddenly lose ALL of their cell phone toys!

--- End quote ---

It depends on whether or not the altitude displayed is erroneous or non-existent. There are redundancies to establish altitude, it's when they all disagree with one another it can get dicey.
syau:

--- Quote from: Gyro on January 18, 2022, 04:59:22 pm ---It looks as if US airlines and manufacturers are warning of a serious threat to flights when 5G is turned off in the US. Are they just scaremongering? Even the FAA seem to warning of possible interference problems with the Boeing 787.

Tell me somebody thought this through. :o


--- Quote ---5G phones: How serious is the threat to US flights?

Ten leading US airlines are warning that the imminent rollout of 5G services could be disastrous.
They say the new technology could cause thousands of flights to be delayed, and risks leaving large parts of the US aircraft fleet grounded indefinitely.

--- End quote ---

https://www.bbc.co.uk/news/business-60042178

I suppose it makes a change from the other conspiracy theories!

--- End quote ---

FAA Continued Airworthiness Notification for 787 https://www.faa.gov/sites/faa.gov/files/2022-01/CAN-2022-01.pdf

Likely similar notice for 777 and 747-8F will follow.

From the news, Japanese carrier already stop operating 777 into the State.
LaserSteve:
This is not the first time. They should have learned about trust but verify, harmonics, and guard bands from the LightSquared fiasco.  There seems to be a problem with private consultants having more influence then what remains of the Engineering Staff at FCC.

I was reading a submission to the Commissioners the other
day from Megacorp G. saying they found no amateur radio or military use of 10 and 24 Ghz in northern California. Their flawed reasoning, was based on the fact that no licenses showed in the ULS data base with fixed locations near their test site.   Ok, so Amateurs don't log their spectrum usage like a corporate spectrum user, and Mil assignments are in the classified portion of the NTIA database, not ULS. So the letter reads "Dear Commissioners, we found this under utilized spectrum, please let us use it for our experiment".  As far as spectrum occupancy goes, nothing could be further from the truth.

Fortunately. DoD has a team that watches what FCC does, closely.

Steve
pickle9000:
The RCTA report was done by volunteers. Not by the FCC FAA or airlines?
Stray Electron:

--- Quote from: syau on January 19, 2022, 03:16:31 am ---
From the news, Japanese carrier already stop operating 777 into the State.

--- End quote ---

   Not just the Japanese but another country as well. I'm not sure who but I know that the Indian government was very concerned over this.

   In my experience, the Japanese are very good and very thorough engineers and if they think that US 5G might be a problem then I think the US and other country should take this a lot more seriously than they appear to be.

  Rule #1. Follow the money.

     I wonder how much the US cell phone carriers expect to make from the 5G market?  And what would it cost them out of pocket to replace it with something else if the 5G system was completely shutdown?
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