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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Steve, Short answer: absolutely. More thorough answer: Absolutely. With our dish at AllisonHouse, we have been dealing with this issue for the better part of a year. We did a complete refurbishment on it last year. We bought the highest quality coax, an LNB with a notch filter to only let our part of the spectrum through, and everything else is heavily shielded. Our dish is in the middle of what I call "TI Hell": several cellular towers, each with different carriers already broadcasting 5G, are nearby. On top of that, just down the road, are multiple commercial and PBS television stations, some of which transmit at 1 million watts Effective Radiated Power (1 MW ERP). We also have 100 kilowatt (kw) FM and 50 kw AM radio towers nearby, as well as an active railroad line close by, producing vibrations, which I also had to deal with. Our engineer showed me the readout at the dish from his spectrum analyzer: it was dang ugly. Throw in COVID-19, and I had serious challenges to overcome getting this done. I'm happy to say that by dealing with all of those problems all at once, I can sleep at night. The only times our dish has issues is if the uplink dies, or there's heavy snow, or a thunderstorm. Standard fare for satellite reception. With that, we can still lose 10,000 to 20,000 packets a day on days when our data center generator is tested. But overall, our packet losses are low, and I'm generally happy with the reception. SSEC is another success story. No offense to them, but for quite a long time, their NOAAport reception was bad. They also did a dish refurbishment, and bought the best LNB money could buy, which is heavily filtered. When all was said and done, they now generally lose *zero* packets per day. They got a 15 dB signal increase(!), and they do have 5G towers close to them. They are another model for how to do it right in a challenging RF environment. Gilbert > On Apr 28, 2021, at 11:05 AM, Stephen Adams via ldm-users > <ldm-users@xxxxxxxxxxxxxxxx> wrote: > > > Good morning all, > > This pertains to everyone who has a satellite NOAAPort feed. > > Given the impending C-band repack to support 5G, are you planning to install > a filter on your dish? Although the NOAAPort frequency is outside of the 5G > range, it is my understanding that the filter is required due to increased > crowding in the upper C-band, leading to potential interference issues. Is > that your understanding as well? > > Steve > > ---------------------------------------------------------------- > Stephen D. Adams > Vice President - Research and Development > AWIS Weather Services, Inc. > 1735 East University Drive, Suite 101 > Auburn, AL 36830-5204 > > Website: http://www.awis.com > Facebook: https://www.facebook.com/AWISWeatherServices > email: sadams@xxxxxxxx > Phone: (334) 826-2149 ext 1003 > Toll-free: (888) 798-9955 ext 1003 > Toll-free Fax: (888) 374-8027 > ---------------------------------------------------------------- > > _______________________________________________ > NOTE: All exchanges posted to Unidata maintained email lists are > recorded in the Unidata inquiry tracking system and made publicly > available through the web. Users who post to any of the lists we > maintain are reminded to remove any personal information that they > do not want to be made public. > > > ldm-users mailing list > ldm-users@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > https://www.unidata.ucar.edu/mailing_lists/
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