Anyone deploying CBRS (NITRO or other 3.5GHz LTE)?
- Thread starter Fatboy
- Start date
radioman2013
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- May 1, 2012
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I tried to get my agency to do that, but they would rather pay someone for service. BTW there is oodles of bandwidth availale for private LTE service.
OP
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- Sep 24, 2013
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- 319
- Thread Starter
- #3
Yes, I am seeing lots of agencies using their dark fiber to backhaul the sites. Mainly used for remote/distance learning now (they are burning CARES/COVID grant money by the ton). I am seeing cities putting it in and sharing it with the schools, same with counties, and also seeing just school districts dropping it in. My main concern now is what happens once the band fills up and we start having contention issues. FB
H
hamjammer
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I helped deploy 5 sites up in Northern California. I have not heard a peep back from the customer. I suppose things are running well, and ultimately it should be on I.T how the system is used.
Keith
Regular Member
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- Oct 19, 2020
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Just deployed (put it on the roof and cabled it... motorola engineers did the rest) last week.
Ran into a firmware issue with the modems and they all went back to manufacture, something with the modem and a Chromebook which the School this is for issues to all students. Interesting system. Looking forward to seeing it fully deployed. Not sure how the month to month expense will work out for the system as it was paid for with CARES money but that's above my pay grade. This one is suppose to be a pilot system to see if they like it and want to deploy more.
On a side note, we were faced with dragging all gear including 36 cement blocks on to a roof via a roof hatch. Necessity being the mother of invention, I built a modular metal frame with a winch that sat over the roof hatch. We drug 36 blocks, 3 roof mounts, radios, tools, wire and all other gear for install on the roof in 3.5 hours. Frame was constructed of 1 inch and 1.25 inch steel pipe. It all breaks down to fit down the hole and assembled is 4 foot by 4 foot square and 7 foot tall putting the winch hook at 6 foot high. Winch was a Harbor Freight deal I had from another project. Lift was tested with a 400 pound generator hung from it for 12 hours. Way more load than it would ever see in use. worked like a champ.
My advice for deployment is this, get the 24 by 30 by 10 NEMA 4 enclosure to run your fiber and electrical too. Use terminal strips for the 110 and 48 volt distribution to and from the power supplies. 3/4 sealtite conduit is your friend when running the power and fiber out to the CBSD's. Don't forget that if you are quoting the install to include grounding as none will be provided by Motorola. And they don't ship any Ethernet cables with anything either.
We went on a 120 year old building. Wood frame roof construction. May sure to review the site as well as all installations and understand at some level static and dynamic loading of structures. 11 blocks, a CBSD 2 antennas and two installers on a wood structure flat roof will make you question the weight loading... and if you are in this type situation, make sure that everyone involved understand to spread out the load. We never put more than 4 block in any one place until we were loading them on the sleds. I know this stuff sounds silly and common sense.... but common sense is a rare commodity in this day and age.
Ran into a firmware issue with the modems and they all went back to manufacture, something with the modem and a Chromebook which the School this is for issues to all students. Interesting system. Looking forward to seeing it fully deployed. Not sure how the month to month expense will work out for the system as it was paid for with CARES money but that's above my pay grade. This one is suppose to be a pilot system to see if they like it and want to deploy more.
On a side note, we were faced with dragging all gear including 36 cement blocks on to a roof via a roof hatch. Necessity being the mother of invention, I built a modular metal frame with a winch that sat over the roof hatch. We drug 36 blocks, 3 roof mounts, radios, tools, wire and all other gear for install on the roof in 3.5 hours. Frame was constructed of 1 inch and 1.25 inch steel pipe. It all breaks down to fit down the hole and assembled is 4 foot by 4 foot square and 7 foot tall putting the winch hook at 6 foot high. Winch was a Harbor Freight deal I had from another project. Lift was tested with a 400 pound generator hung from it for 12 hours. Way more load than it would ever see in use. worked like a champ.
My advice for deployment is this, get the 24 by 30 by 10 NEMA 4 enclosure to run your fiber and electrical too. Use terminal strips for the 110 and 48 volt distribution to and from the power supplies. 3/4 sealtite conduit is your friend when running the power and fiber out to the CBSD's. Don't forget that if you are quoting the install to include grounding as none will be provided by Motorola. And they don't ship any Ethernet cables with anything either.
We went on a 120 year old building. Wood frame roof construction. May sure to review the site as well as all installations and understand at some level static and dynamic loading of structures. 11 blocks, a CBSD 2 antennas and two installers on a wood structure flat roof will make you question the weight loading... and if you are in this type situation, make sure that everyone involved understand to spread out the load. We never put more than 4 block in any one place until we were loading them on the sleds. I know this stuff sounds silly and common sense.... but common sense is a rare commodity in this day and age.