Thanks everyone for your thoughts.
Although we haven't had any interference problems yet... better safe than
sorry. We just had a filter installed. Easy peasy!
Steve
On Wed, Apr 28, 2021 at 12:29 PM Raymond Weber <admin@xxxxxxxx> wrote:
> I have 5g sites on these adjacent frequencies all around me. I have had no
> issues with a 12 ft dish.
>
> a good LNB, norcomm etc, seems to be the key.
>
> Ray
> ------------------------------
> *From:* ldm-users <ldm-users-bounces@xxxxxxxxxxxxxxxx> on behalf of
> Gilbert Sebenste <gilbert@xxxxxxxxxxxxxxxx>
> *Sent:* Wednesday, April 28, 2021 1:26 PM
> *To:* Stephen Adams <sadams@xxxxxxxx>
> *Cc:* ldm-users@xxxxxxxxxxxxxxxx <ldm-users@xxxxxxxxxxxxxxxx>
> *Subject:* Re: [ldm-users] filters on NOAAPort dishes?
>
>
>
>
>
>
> *CAUTION:* This email originated from outside of the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.
>
> 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
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> ----------------------------------------------------------------
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