Are you running Telrad or Baicells? Need a solution to get every bit you can out of the system? Don’t forget your hangers can influence pim .
Traditional hangers and diameter-specific grommet combinations complicate installations, making it difficult to secure cables from wind and vibration, which can cause passive intermodulation (PIM) problems.
Check out PIM hangers from Tessco.
After the recent filing of Ubiquiti vs Cambium, Winncom, and BLIP networks the question of case studies has come up. One of the pieces of complaints is a case study Blip Networks did on Cambium Elevate.
What changes do you think will be forthcoming in future case studies? Should end users who do the case study require more terms from the manufacturer they are doing the case study to protect themselves? Are we going to see actual legal documents for any case studies to be done? Or are companies just not going to want to do case studies for fear of opening themselves up for retaliation?
I am interested to know your thoughts.
The following are results from a series of tests of AGLcom’s parabolic dish antennas on an existing link that is 5.7 miles long. The link typically passes 80-90Mbs with a TX capacity of 140 Mbs and radios used are Ubiquiti AF5X operating at 5218 Mhz. A full PDF with better Readability can be downloaded here..
The tests were taken in stages:
The tables below do not follow the test order as the third line of data was actually the last test performed.
Antennas:
A-Jirous JRC-29EX MIMO
B-Jirous JRC-29EX MIMO C-AGLcom – PS-6100-30-06-DP D-AGLcom – PS-6100-29-06-DP-UHP
Results:
Table 1 is the signal strength results of the various dishes on the link. The first line, A-B, is the original Jirous to Jirous. A is the first two columns of the link and are the A side and the last two columns are the B side on the link. What is of interest is that exchanging B to C in the second line brought the signal deviation between the channels to only 1db and 0 db as seen in Table 2. The third line was a result of replacing the horn on the A dish and optimizing the setting on the AF5X radios. This changed the signal by around 7db and improved the link capacity, Table 3. Clearly, the A dish had a problem with the original horn.
In the fourth line, D-B, the signal strength improved as well at the signal deviation on the two channels, Table 2 first two columns. This link was not optimized. The fifth line, D-C is both AGLcom dishes which improved the bandwidth, Table 3, and the signal deviations, Table 2. The final line, D-C, was the previous line optimized. The signal strengths moved closer together and the bandwidth improved.
Link Ch0 Ch1 Ch0 Ch1
A*-C -64 -66
D*-C -60 -60
-70 -74 -71 -71 -65 -66 -59 -59 -58 -58 -61 -61
Signal Strength (* optimized data) Table 1
Table 2 has four data columns, the first two being the measured results and the latter two being the measured difference from theory. The Jirous and AF5X calculators were used for the theory signals. Clearly the signal approached the theoritical limit with the optimization and with the change of dishes. The optimization improved the signal by ~9db for the link that we replaced the horn on the Jirous and by ~2db for the AGLcom link.
Link dSig dSig A-B 3 4 A-C 1 0 A*-C 2 1 D-B -1 0 D-C 0 0 D*-C 0 0
dSig dSig -16.5 -17.4 -17.0 -15.0 -8.0 -9.0 -13.3 -5.3 -7.0 -4.3 -5.0 -6.0
Signal strength variation from theory Table 2
The band width improvement was more obvious, Table 3, from 22 Mbs to 39 Mbs for the RX and 144 Mbs to 141 Mbs TX for the link with the horn replacement. The bandwidth improvement for the optimization of the AGLcom link was from 61Mbs to 66Mbs RX and from 211Mbs to 267Mbs for TX.
The bandwidth improvement from the original, optimized link to the AGLcom link is from 61Mbs RX to 67Mbs and from 210Mbs TX to 267Mbs. There is a clear improvement for the AGLcom link over the Jirous link.
Link BW-RX
A*-C 60.9
D*-C 66.6
BW-TX 144.6 141.4 210.0 211.0 215.0 267.6
Table 3
Conclusions:
The data supports a measurable improvement in both signal strength and bandwidth with the use of the AGLcom dishes. However, it is difficult to quantify the improvement. The Jirous dishes were identical whereas the AGLcom dishes were not. One of the jirous dishes was under performing initially but was repaired for the last tests. Additional testing is needed to provide accurate data analysis and performance comparison. The best performance tests would involve identical AGLcom dishes, ideally two links, one each of both types of dishes.
The Recently, it was announced that Ubiquiti Networks Inc (UBNT) is suing Cambium over the Cambium Elevate. This will be a long post, so sit back with your favorite beverage and read away.
Disclaimers. I have been in the ISP world since 1991. I cut my teeth on BBS systems and moved onto dial-up. I am also an independent Cambium certified consultant. Read about the consultant program here... I also have clients who run a wide variety of UBNT products, and the last ISP we sold was 90 percent UBNT. We run some UBNT routers in MidWest-IX as well. My father was an attorney for over 40 years. I grew up around attorneys, have regular conversations with friends who are attorneys, and was learning about the law from the time I was 10. Having said that, I am not an attorney. Nothing in here should be construed as an official legal opinion.
So let’s get some background on what has transpired with Cambium and their elevate software. Cambium came up with a way to load their software onto select UBNT wireless units and, after a reboot, had the cambium EPMP software active on them.
Why did this work?
UBNT Airmax radios use U-Boot loader. If you want to read all about it you can read the references at the bottom of this article under References. The thing to know is it is released under the GNU General Public License.
UBNT and Cambium EPMP both use “commodity” wifi chipsets. This keeps the cost down and the software becomes the majority of the “special sauce” that makes them different. This is in contrast to the UBNT Airfiber and Cambium 450 lines. These use custom made chipsets. This is is one reason those lines are more expensive.
By using an open source bootloader and commodity hardware Cambium was able to figure out how to load their own software onto the UBNT devices. UBNT countered with modifying the bootloader to accept only signed software images. The only images that were recognized were ones signed by UBNT. If you are interested in learning more about signed software go here: https://www.quora.com/What-does-signed-firmware-means
Cambium came up with instructions on how to downgrade and by-pass the ability to only load signed firmware onto the device. The method I am aware of is downgrading the installed UBNT firmware to a certain version.
All in all the Elevate process turned the UBNT hardware into a device running Cambium’s software.
The gray areas aka this is why we have attorneys
There are several arguable points in this lawsuit. If you want to read articles on the Lawsuit
https://www.law360.com/articles/1071813/wireless-co-ubiquiti-says-rival-sells-hacking-firmware
Debate #1 – The Hardware
The term Software Defined Radio (SDR) has been around for quite some time now. Basically, this is a radio with very little RF elements to it. Ham radio has been using SDRs for quite some time now. The idea is the manufacturer uses off the shelf components to build a single radio which can do various functions depending on what software is loaded. It also allows features in the chipset to be activated and licensed should the programmer want to support them. It’s interesting to note Wireless is not the only place this is happening. Software Defined Networking (SDN) is a growing thing, as well as a plethora of devices. A PC could be considered a software-defined device. More on that later.
So an argument could be made the UBNT devices are a software defined radio. they did not use custom chips. They most certainly have a proprietary board layout, but that is not a criterion in an SDR. So if a customer buys a piece of hardware, should they be able to load whatever software they want on it?
An argument saying yes they should can be pulled from many areas. This Verge Article (more in the reference at the bottom) says the Government ended the debate in 2015 giving consumers the ability to Jailbreak their phones and devices without legal penalties. Before that is was briefly illegal to “Jailbreak” your phone. This was mainly lead by Apple. The government said it was fair use to Jailbreak, but not carrier unlock your phone without permission.
Apple also went through this briefly when they switched to Intel processor chips. People were figuring out ways to load Apple OSX onto Dells, HP, and other “PCs”. The debate was whether this was legal or not. The following article sums up why these “hackintosh” computers were shut down. By clicking on the “Agree” of the End User License Agreement (EULA) before installing OSX you agree to a great number of things. The short of it was the user license of OSX says you can not install this on non-apple hardware. However, it says nothing about installing non-Apple Operating systems on the hardware. Apple knows it is commodity hardware. If you want to buy a 2000 mac and put windows 10 on it, go ahead. They even help you with an option called Bootcamp.
Our last example is the Linksys WRT54G and DD-WRT and its variants. A quick history of the DD-WRT Controversy doesn’t revolve much around the loading of the software onto Linksys hardware, it involves the use of the GPL license by DD-WRT. There were some FCC concerns, but we will talk about those later.
So the questions to be argued for this point:
Q1.Is the UBNT device a software-defined Radio?
2. Does the user have the legal ability to load whatever software they want to on hardware they own?
Debate #2 – Was the UBNT firmware “hacked” as they allege?
There are lots of unknowns here. Attorneys try to prove intent in arguments like this.
Did Cambium somehow reverse engineer the UBNT software, thus violating copyright laws? At what point is the line crossed? Since UBNT used a bootloader free to everyone, was the simple act of loading new software onto the units a hack? From what I know, and I am not a programmer, is Cambium used the bootloader to overwrite the UBNT software and install their own. How is this any different than installing Linux on a Dell PC? Computers have a bootloader called a BIOS. On a Wireless radio, where does the bootloader stop and the software start? To me, these are clearly defined. Bootloader and Image file.
If you boot up the UBNT unit out of the box without agreeing to the EULA have you violated the EULA? Can you be penalized for loading software onto a device you never had the opportunity to see and agree to anything? Did the simple act of taking it out of a box and booting it up via TFTP cause you to agree to something?
In a Brothers Wisp video on this topic, Justin Miller mentions some arguments on why this can be allowed.
Debate 3 – Did Cambium violate FCC rules?
If we believe the user has the ability to load software onto units they own it is the user, as well who developed the software to go on the device, to follow all laws then it is not up to UBNT to police this. This is the job of the FCC, provided it is agreed that once the user buys the hardware it is theirs. For this specific case, UBNT claims Cambium is violated allowed power limits by loading their software onto the UBNT device. Also, is the new device an FCC certified system? Most likely not unless it is resubmitted to the FCC for testing, and any labels removed and new ones added. However, this is not up to UBNT to enforce this. This is the job of the FCC.
Is UBNT being a steward of the community to bring this to the attention of the FCC, thus saving UBNT from possible issues with the FCC? Maybe, but why not bring suit against any of these others?
Bitlomat
DD-WRT
HamNet
It’s interesting to note this page on HamNet
I am not a telecom attorney and I do not know the ins and outs. From what little I know of being in the industry you have to have an FCC certified system with proper identification stickers. I remember when UBNT had to send out stickers for units several years ago for DFS certification. You were supposed to put them on all your upgraded radios to be compliant. By changing the software did Cambium no longer make it a certified system? Or, because they use the same chipset is it still legal in the eyes of the FCC?
Debate 4 – Collusion and the end user
This is the biggest bombshell out of this whole ordeal and actually makes my blood boil. UBNT is suing Cambium of course. They are also suing a distributor and an end-user ISP. Cambium I can understand. UBNT is trying to protect their intellectual property and believe it was violated. They have every right to do so.
The distributor I can understand the argument. The distributor allegedly participated in distributing the “hacked” software. Not saying it’s right or wrong, but I can see why there would be the argument.
The most disturbing part of this an end-user ISP is named in the lawsuit. UBNT is suing a customer who was using the UBNT product and then decided to switch to a competitors product. In the case of elevate, the end-user ISP loaded the software onto their existing hardware. If we go along with the idea of you own the hardware, UBNT is suing a customer who bought their hardware and loaded the elevate software on it. This would be like Dell suing a school corporation for loading Linux onto new PCs they bought.
Many of the arguments you read are about you don’t own the software. If you buy the hardware, and it has a GPL licensed bootloader and load your own software onto the device, what laws have you violated?
Imagine this scenario. A user opens up a UBNT radio they bought. They see it uses an Atheros chipset, like many other radios. They write some code to talk to the hardware, all without ever looking at the software that came on the radio, boot up the unit via TFTP and load their own compiled image onto the hardware. All the while they never have seen the UBNT software. Did they violate any laws or user agreements?
This case and some others will help define who owns the hardware. We know the company, in this case, UBNT, owns the software. You have no legal standing to de-compile their intellectual property. That is cut and dry. What isn’t, is if they are using the same hardware everyone else, the same bootloader, is that considered proprietary? If not, and you overwrite their software were you allowed to because you own the hardware. Is the GPL bootloader considered proprietary? If we apply the analogy the bootloader is the same as the BIOS in the PC, no it is not proprietary. The BIOS debate has already been solved in court. Many of the PC debates have been loading a company’s software onto other hardware, such as Apple Hackintosh Computers and not the other way around, such as this case. As we talked in point 1, in the PC world, Apple even gives you the tools to install other Operating systems.
If UBNT sticks code in that says the bootloader only recognizes signed images is that “hacking” to put your own software on? Is this any different than Jailbreaking an Iphone?
So what does this all mean?
Going forward I believe we will see EULA and licensing agreements change. The hardware from a manufacturer will still be the property of the manufacturer, much like John Deere software.
The definition of what you own and have access to will change.
Proprietary bootloaders will take the place of Open Source bootloaders.
There will be a rise in manufacturers who make white box radios. Will there be a long-term solution? Only time will tell. We are seeing this trend in software-defined networking.
We will see more NDAs to end users about products. I believe we will see fewer case studies on newer products. End users will definitely be more tight-lipped about what they are doing.
So it will be interesting to see how this all plays out. Will there be enough precedent in the hardware world to squash some of this? Or does UBNT have a case? Obviously, UBNT has a responsibility to their shareholders to vigorously defend their Intellectual property. This case will help define where the commodity/open source items stop and where the intellectual property starts.
Where does this leave distributors? Do they want to continue carrying the Elevate product? Do they want to cut relationships with a manufacturer who has sued one of their own? The same goes for the end-user community. Do WISPs want to do business with a company that could potentially sue them for using and talking about a competitor’s product? Do the end users own the hardware they buy? If so, how much freedom do they have? If you don’t own the product, imagine the accounting ramifications.
https://wiki.openwrt.org/toh/ubiquiti/airmaxm
https://www.wired.com/2015/04/dmca-ownership-john-deere/
https://www.wired.com/2010/07/feds-ok-iphone-jailbreaking/
Feds okay iPhone Jailbreaking
https://superuser.com/questions/424892/is-bios-considered-an-os
Is the Bios an Operating System?
https://www.chromium.org/chromium-os
Google Chromium OS
One of the things I see startup wisps do wrong is their use of phone numbers. This is one of those details that is often overlooked but is critical. It’s critical not only for tracking but also for the sanity of everyone involved. Let’s identify where many WISPs go wrong.
The typical startup wisp is a type A go-getter. This is what Entrepreneurs are by default. Once they have a plan they jump head over heels in. Many may start with a simple phone number, but when they call a customer if they are on their way to do an install or something they end up using their phone number. The problem is customers keep this cell phone. If the office is closed they start texting or calling any number they have. Some customers will be respectful of boundaries, but many will not. If they are getting packet loss at 3 am they are calling and texting. This problem compounds as you grow and you have multiple installers involved. You want customer issues tracked in some sort of ticket/CRM system. You also don’t want your employees ahev to answer customer texts or calls after hours if they aren’t being paid. It’s one of the quickest ways for employees to get burnt out or say the incorrect things.
So how do you solve this? The simple buzzword answer is unified communications. One of the easiest and cheapest is Google Voice. With Google Voice and others, you have a primary number. This is the number you give out to clients. They call this and it rings another phone or phones. This can be an extension on the VOIP system it is a part of, another number, and/or cell phones. Depending on the level of sophistication it can ring all the programmed numbers at once, or ring one, and move on to the next one. If no one answers it drops the caller into voice mail. With Google voice, the programmed numbers are all rang at once.
The inbound ringing is pretty standard. The “trick” for the WISP is the outgoing calling. You want to be able to call a customer and have it come up as the main number’s caller ID, not your cell phone. Most PBX systems can be set up to do this with the extensions attached to them. Cell phone calls are a little more complicated. The way Google Voice solves this is through the use of forwarding numbers, You bring up the app, enter a number and it actually calls a different number. Behind the scenes, it is using this forwarding number to “spoof” your number to the person you are calling. Your phone is not calling the other party directly. Your phone calls this forwarding number behind the scenes and works it all out on the backend.
Other vendors have Apps which do similar functions. Asterisk has their DISA function. Once you have these functions setup it boils down to training and processes. Your installers need to remember to use the app or the function when calling customers. As the company grows, a way to help this situation is for employees to not use personal cell phones. If a company provides a cell phone the employee can customize voicemail, or even forward no answers to the help desk should a customer get the cell phone.
Hope this helps one of the glaring issues a startup faces.
-450M is the 3GHZ platform of today.
-LTE will be a split architecture system
-LTE standards-based
-Working on the ability to swap out an existing AP from another manufacturer and still keep the subscribers.
-Named “cnRanger”
-450 is still going to outperform LTE in many ways
Technical
-8×8 Baseband unit (BBU) and Remote Radio Heads (RRH)
-BBU can drive 4 2×2 radios to provide 350 degree coverage
-One radio for a single Sector MU-MIMO support
-Fiber optic connection between BBU and RRH
-Release of 3.xGHZ in Q2 2019 is the goal
-64 SMs per sector initial
-2x Gige ports in the BBU
-Possibility and possibility is stressed, that 450 3ghz subscribers might be able to connect to the new platform.
-Sim cards are aiming to be built in.
Full site approximate price for a complete build for $15,000.
Things could change
MTIN Family of web-sites
mtin.net
j2sw.com
startawisp.info
indycolo.net
820 C HP
-Basically does everything the 820C does but more power
-Field replaceable diplexer. can buy one chassis and swap diplexers instead of swapping the entire radio.
820F IDU
-4096 QAM
-1U split mount
-Can get a lower and higher power ODU
PTP 670
-High capacity multipoint added. Supports up to 8 end points. Requires a multipoint license key
-Over the air license re-keying
-Dynamic Spectrum Optimization
Recently I attended the Cambium Roadshow 2018. Some notes.
-Epmp 3000 expected to be here in September. 4×4 Mimo product. Early marketing should be coming in the next couple of weeks.
-820C pricing is getting aggressive.
-Mikrotik Open beta Elevate is out. Ability to elevate Mikrotik units.
Force 300
-second radio can be used as management access or a realtime spectrum analyzer
-No more java client for the analyzer
-65k packets per second
-About 10% throughput at the sector in a legacy network. Future software updates can lessen this.
-Dynamic spectrum capability
-Future vision is to have CNMaestro be aware of spectrum. This opens up the ability to view channels and interference on a network level.
450 Product Line
-Channel sizes have increased to 30 and 40mhz
-450b radios Integrated (17dBi for $299) and high gain (24dBi for $349)
-New processor
-4.9-5.925 GHZ
-Single gigabit port
-30 volt power supply, polarity Agnostic
-450 3.65 will be SaS compliant
cnArcher
-iPhone app should be here soon.
-Ability to push configs from the App
450M
-8×8 mimo due to physical size. 12×12 or 16×16 would mean a very large product
-Integrated 90 degree sector
-Direct DC power
-SFP port
-Current SMs will connect
MTIN Family of web-sites
www.mtin.net
www.j2sw.com
www.indycolo.net
www.startawisp.info
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