EEVblog Electronics Community Forum
General => General Technical Chat => Topic started by: windsmurf on June 26, 2019, 12:12:09 am
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5G Auction Threatens National Security, According to Meteorologists, Accuweather
https://www.accuweather.com/en/weather-news/does-5g-expansion-threaten-weather-forecasting-national-security-and-the-lives-of-americans/70008605 (https://www.accuweather.com/en/weather-news/does-5g-expansion-threaten-weather-forecasting-national-security-and-the-lives-of-americans/70008605)
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It's fine to have "concerns" but has anyone actually tested it?
Some of the comments are hilarious too, for example this gem: "5G must be stopped until proven to be safe".
:palm:
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OMFG! If I see one more conspiracy theory regarding new technology, we might as well nuke the world and get it over with. :palm: :rant:
Those things don't give a crap about piss ant little antennas, how many of them would it take to look like hurricane? A million? They seem to think it's the RF version of Deck the Halls. :bullshit:
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OMFG! If I see one more conspiracy theory regarding new technology, we might as well nuke the world and get it over with. :palm: :rant:
Those things don't give a crap about piss ant little antennas, how many of them would it take to look like hurricane? A million? They seem to thing it's the RF version of Deck the Halls. :bullshit:
There's quite a few groups that have filed concern, including NASA, NOAA, US Navy, American Geophysical Union (AGU), and dozens of other scientific organizations.
https://arstechnica.com/tech-policy/2019/05/5g-networks-will-likely-interfere-with-us-weather-satellites-navy-warns/
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If your weather radar has such bad rejection (24.0GHz vs 24.25GHz, or 1% difference from center frequency), then you should upgrade your radar, not to prevent civilian use of unoccupied band.
FFS, cheap $0.5 FM receivers can reliably differentiate 100kHz from 100MHz, or 0.1% central frequency.
From what I understand, its nor RADAR... its passive emissions from water vapor from the atmosphere. Since its such a miniscule emission, active emissions near this frequency could undermine the satellite's ability to detect it.
https://wattsupwiththat.com/2019/05/21/will-5g-undermine-weather-prediction/
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From what I understand, its nor RADAR...
Still, your receiver should be able to tell between 23.60GHz~24.00GHz and 24.25GHz. 400MHz pass band and 250MHz stop band is easy.
The concern is with bleedover into that range, as the FCC has allowed for a bleed-over of -20dB. Additionally, low quality filtering on cell towers, they fear, can cause even more bleedover, effectively blinding the satellites.
https://www.wyden.senate.gov/imo/media/doc/Navy%2024Hz%205G%20Spectrum%20Impacts.pdf (https://www.wyden.senate.gov/imo/media/doc/Navy%2024Hz%205G%20Spectrum%20Impacts.pdf)
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From what I understand, its nor RADAR...
Still, your receiver should be able to tell between 23.60GHz~24.00GHz and 24.25GHz. 400MHz pass band and 250MHz stop band is easy.
The receivers may be able to ignore th 24.25 GHz signal - though it is not convenient with a broad band receiver and not all old satellites may do that.
However this does not help if the sender not only uses the 24.25 GHz Band, but also sends out some signal at 23.8 GHz. The problem seems to be that FCC not only wants to sell license for the actual band but also allow too much leakage - things seem to OK if they would limit leakage to some -60 dB instead of some -20 dB. For me -20 dB leakage to neighboring bands sound like a ridiculous low requirement - though -60 dB may get difficult.
The final word on the leakage may be with the international organization anyway - so the FCC is kind of trying to auction a thing they don't even own. If other countries complain they may have to apply lower limits. So the telecom companies should be warned that they may not get what they which for and bribing FCC may not be enough.
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Some one in the know told me that announce the powering up of new location. But, don't actually power them up for few weeks.
That way they can identify all the wackos that complain about the base station RF signals making them sick.
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This video is quite intersting on the effect of 5G on RADAR
https://www.youtube.com/watch?v=ZbrbRUAfpac (https://www.youtube.com/watch?v=ZbrbRUAfpac)
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This video is quite intersting on the effect of 5G on RADAR
... that video was about 5Ghz wifi and not 5G... but thank you that was interesting and relevant to the topic.
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Republicans accuse 5G advisor who voiced concerns of the scientific community as acting out of "personal animosity"
https://www.theregister.co.uk/2019/06/28/us_spectrum_row/ (https://www.theregister.co.uk/2019/06/28/us_spectrum_row/)
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The title of the article in the OP and the OP itself are clickbait-ishly misleading. The issue isn't 5G, it's the proposed allocation of part of the 24GHz band that is adjacent to a critical frequency used for water vapor measurements without adequate limits on out-of-band emissions. I'll admit that it doesn't make for quite as snappy of a headline.
It's fine to have "concerns" but has anyone actually tested it?
Apparently, yes, both NOAA and NASA have conducted studies that concluded the proposed use of the spectrum would be detrimental to critical weather satellites. From the Ars Technica article:
The Navy memo cited NOAA and NASA studies on interference from 24GHz spectrum, which is intended for mobile use and is adjacent to spectrum used for weather operations.
"[A]s such, it is expected that interference will result in a partial-to-complete loss of remotely sensed water-vapor measurements," the Navy memo said. "It is also expected that impacts will be concentrated in urban areas of the United States first."
The memo suggested that the out-of-band emission limits should be reduced to at least -57dB.
The objections lodged by congress to the FCC's plans are based on the fact that the FCC has not provided a rationale for proceeding with their plan in spite of the objections lodged by the operators of weather satellites (and the consumers of the data furnished by those satellites, like the Navy). This is not unusual for the FCC under the current administration, which has plowed forward on a number of pro-industry initiatives at the expense of consumers and the public interest.
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Hmm where is the problem? 5G run on the 3Ghz Band war away from the interference?!
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I still watch it. The Links are still out dated.
for CZ Wifi List: http://radar4ctu.bourky.cz/Ruseni.html (http://radar4ctu.bourky.cz/Ruseni.html)
Here I found the Map with the Weather Radar Station: http://eumetnet.eu/wp-content/themes/aeron-child/observations-programme/current-activities/opera/database/OPERA_Database/index.html (http://eumetnet.eu/wp-content/themes/aeron-child/observations-programme/current-activities/opera/database/OPERA_Database/index.html)
If someone want look what it reach Vienna. :o... :scared:...
Regulation for 5Ghz in Austria: https://www.rtr.at/de/tk/Spektrum5GHz (https://www.rtr.at/de/tk/Spektrum5GHz)
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It's fine to have "concerns" but has anyone actually tested it?
Some of the comments are hilarious too, for example this gem: "5G must be stopped until proven to be safe".
:palm:
Did you even bother look at Ericssons 5G radiation safe zones map before making that naive comment? off-course not!
Do you even bother to care a minimum of the recent 5G test DDD syndome? (Dead Dutch Ducks).
5G is needed for Technocratic World Order, Rotchild, Rockerfella, Trilateral Comission, Club of Rome, Atlantic Council, CFR, Skull and Bones people.