My niece Chloe has kicked off her Girl Scout cookie sales for this year. If any of you out there would like to order some cookies please use the link below. Send some boxes to a client or keep them all for yourself.
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Author: j2sw
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Welcome a new sponsor
We want to thank MyPatriot Supply for becoming an advertiser on this blog. While not totally WISP related, I think it is relevant.
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Panduit field terminable rj45 plug
https://thenetworkcollective.com/2018/11/st-bgp-optimal-route-reflection/
Cambium and CTIconnecxt put on a webinar about ePMP 3000 today. This should be available online at one point. Look for it in the Cambium forums.
Some notes I took
-ePMP 3000 offers Simultaneous MIMO downlink transmission
-You will be able to use the beamsteering antenna with the 3000. Cambium is working on the software to make this work.
-3000 has a dedicated receiver chip. This allows you to run the spectrum analyzer in realtime. Also has “edetect on steroids” which shows more information than the current edetect.
-Sector is a 4X4 90 degree sector with beamforming. Achieves and extra 3db in the downlink.
Beamforming vs Beamsteering
Beamsteering is for dealing with interference.
Beamforming is for downlink gain.
-Cambium mentioned the concept of Azimuth Delta. This is groups of SMs in terms of how the AP talks to groups. The gave an example on a google earth plot. In a nutshell, when you have gain in one direction it takes advantage of the null in different directions. More to this, but that is for another post.
-“Sounding” -Sends a special packet and gets feedback from the subscriber. Determines how the phase shift works and other things.
-Elevated clients beta is coming to make the elevated clients work with the 3000.
I hope distributors work out a smaller cold shrink for the sma connectors on the ePMP Ap radios. Weatherproofing these properly will be an issue due to the close proximity of the connectors. I have not seen the connectors on a sector to see how those will be. This is where folks could take a page from the coldshring that comes with the Baicells gear or the cables with the integrated boot some distributors sell.
Fluke networks has fired another volley in the “zip ties vs. velcro” for cables front. While this article does not address velcro vs Zip ties directly, it does bring up some points about using zip ties.
https://www.flukenetworks.com/blog/cabling-chronicles/beauty-isn-t-skin-deep
ePMP Beta Release 3.5.5-RC8 is now available for the ePMP and Elevate. The software downloaded at our Software Download Site, ePMP Beta: https://support.cambiumnetworks.com/files/epmp/beta
New Features
Force 190 FCC region support (including DFS functionality)
Improvements
Multiple improvements to IPv6 operation with cnMaestro and DHCPv6
Fixed Defects
[Elevate] NBE-M5-16 produces errors on Ethernet interface
RX Pause counter increases on Mikrotik routers with ePMP devices connected
PMAC details not updated in cnMaestro when changing associated AP
Error Drop Packet erroneously reporting packet drops
NTP server IP assignment cannot be changed after JSON configuration file import
In a previous series of articles we talked about a new Cambium 550 link and the noise challenges we had. You can start your reading in Part one and Part two.
Due to the frequency challenges, we decided to upgrade the dishes to RF Elements Ultra Horns.
If you recall our spectrum looked like this before.
After the horns. While not a night and day difference you will notice several improvements across the band. Less red and yellow on the scan and sharper drop-offs. We saw the most improvement in the 5160 area and the 5720 ranges. And this is with the horns pointed right at the source of most of the 5GHZ noise. Not much you can do if you are pointed right at the noise.
What did this mean for the link? It meant we were able to find a 200 meg increase because we were able to obtain better modulation on the link.
So while we were not able to filter out all of the noise we wanted, we were able to increase our MCS rates on a very noisy link to increase bandwidth and increase the reliability of the link. Before the horns, the MCS rates would be in a constant state of flux dealing with noise.
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Some Christmas downtime reading
A geek’s Christmas downtime reading
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