AMS Committee on Radio Frequency Allocations

Official voice for the American Meteorological Society Committee on Radio Frequency Allocations. Insight on spectrum matters impacting the weather enterprise.

[ESA Earth Observation @ESA_EO]

Despite current @ITU rules on use of the electromagnetic spectrum, satellites sometimes suffer from interference – radio frequency interference, or RFI. This can mean loss of data, risk of damage to the satellite receiver and biased or uncertain measurements.

The animation shows the probability of interference across the globe between February 2023 and February 2024.
ℹ️https://t.co/rdK3I1iAuD

[Satellite Safety Alliance @safesatellite]

4 years later, several scientific studies confirming harmful interference to GPS and satcom, and continued widespread opposition by stakeholders, the FCC has taken ZERO action to address the flawed #Ligado order. Learn more about this massive mistake: https://t.co/lTSqBAMIx5

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

Join us TODAY! #AMS2024

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

🔊 JOIN US MONDAY, JANUARY 29, at 4:30 PM EST, in the Baltimore Convention Center Room 307 and online

#AMS2024 Joint Session on Radio Frequency Spectrum: "What's the Forecast for RF Spectrum? Exploring the Way Forward on Spectrum for the Weather-Water-Climate Enterprise in 2024"

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

🔊 JOIN US MONDAY, JANUARY 29, at 4:30 PM EST, in the Baltimore Convention Center Room 307 and online

#AMS2024 Joint Session on Radio Frequency Spectrum: "What's the Forecast for RF Spectrum? Exploring the Way Forward on Spectrum for the Weather-Water-Climate Enterprise in 2024"

[Renee Leduc @reneeneelc]

But weather satellites will be key to creating his routes and last minute weather info also. @NOAASatellites Like its @JPSSProgram satellites with passive sensors near 24 GHz and 50-58 GHz to inform weather models for Santa's advance forecasts. @AMSSpectrum

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

Three years from the Ligado order, we are joining 91 groups to urge @POTUS and Congress to work with the @FCC to stay the order. An independent study from @theNASEM conclusively showed Ligado threatens vital GPS, SATCOM, and GOES services. #RethinkLigado
https://t.co/QtdZAN7po0

[Beautiful Public Data @BeautPublicData]

⚡️New post⚡️: This crazy, beautiful chart from the @NTIAgov illustrates the incredible complexity of managing one of our nation’s most crucial – and invisible – national assets: the radio spectrum. 📻 https://t.co/hzFXBHzMrx

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

🔊 JOIN US THURSDAY, JANUARY 12TH, at 1:30 PM MST

#AMS2023 Presidential Session: "Spectrum's Critical Role in Weather and Climate Data: How Do We Move Beyond Regulatory Conflicts to Science-Informed Innovation?"

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

Chairwoman Johnson and Ranking Member Lucas urge FCC to limit spectrum sharing to avoid harmful interference in the 1675-1680 MHz band https://t.co/TlhU1eqc8a

[Science Committee Democrats @sciencedems]

Looking Back to Predict the Future: The Next Generation of Weather Satellites https://t.co/uBneDnhiCU

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

The @ametsoc and @theAGU joined others in the weather enterprise to highlight the Spectrum Pipeline Reallocation 1675–1680 MHz Engineering Study (SPRES) report finding that users of @NOAASatellites are likely to encounter interference if bands are shared: https://t.co/O5bVQeE1mK

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

What we have been saying 👇

[Satellite Safety Alliance @safesatellite]

The #FCC released a detailed independent analysis prepared under the purview of #NOAA that finds #LigadoNetworks' 5G operations will pose significant harm to critical real-time #weather and water data transmitted by NOAA #satellites https://t.co/eLbxa3MC52

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

spectrum

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

#RethinkLigado

Reliable access to GOES Data Collection Platform Relay (DCPR) and GOES Rebroadcast (GRB) is at stake.

Without @FCC action soon, Ligado will operate noisy telecommunications systems near quieter space-to-earth relays for GPS, satellite comms, and weather services.

[Satellite Safety Alliance @safesatellite]

We applaud the bipartisan Senate letter urging @FCC to stay & reconsider the Ligado Order. Their grave concerns reflect the overwhelming concern of 14 federal agencies & vast federal /commercial user base of #GPS, #satcom & weather forecasting services. https://t.co/lTSqBAMIx5

[Satellite Safety Alliance @safesatellite]

We applaud the bipartisan Senate letter urging @FCC to stay & reconsider the Ligado Order. Their grave concerns reflect the overwhelming concern of 14 federal agencies & vast federal /commercial user base of #GPS, #satcom & weather forecasting services. https://t.co/lTSqBAMIx5

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

Upcoming radio spectrum panel discussion at the @ametsoc annual meeting: "How Secure are our Models and Satellite Observations? Realities of Spectrum Interference"

Join us virtually Wednesday, 26 January 2022, at 2:30 PM ET. Attendees must be registered for the annual meeting.

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

News: 5G network deployment in the U.S. spawns a cluster of disruption (via @theaircurrent)

"The aircraft’s radar altitude abruptly ran down to zero, causing repeated loud aural warnings: PULL UP WHOOP WHOOP DON’T SINK TOO LOW GEAR."

Read more: https://t.co/yj9joIKARI

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

Folks, We tried to warn you about #5G...

Slide from April 2021: Sai Kalyanareraman of Collins Aerospace said to Friends and Partners in Aviation Weather that "Interference to radar altimeters could endanger safety of life airborne operations"

All slides: https://t.co/xMjcSHOY3j

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

There is not one Wimzie's House GIF on @Twitter. The last new episode was made in 1996. #WimzieWhat

[AMS Committee on Radio Frequency Allocations @AMSSpectrum]

Would you rather watch Wimzie's House or have lifesaving weather imagery and data in the hands of scientists and meteorologists critical for understanding our planet? #RethinkLigado #WimzieWhat

[Satellite Safety Alliance @safesatellite]

#LigadoNetworks has controlled prime #spectrum since 2007–but the only evidence of any service ever provided by Ligado is a video service called #Modeo. Maybe it’s time to #RethinkLigado:
https://t.co/j0tsTztLhf