Where the is a WISP there is a way

While driving to #usmum2019 I happened to see this lone antenna sticking up on a house off of I30 near Dallas.  Being a “WISP guy” I am probably just a handful of folks who recognize such things.  If you are a wisp and think you can’t compete in urban areas remember this picture.

Now, I do not know the details. There could be zero broadband in this neighborhood, or there could be a lot of competition.  If any of my readers claim this please let me know the details as I would like to do a story on you. Wireless ISPs can compete and are competing everyday.

PTP 550 continuation

In a previous post, I mentioned a 5-mile link using Cambium PTP550s and why frequency matters. Today we enabled the second radio and have some results from that.  First, let us talk about some of the parameters.

As you can see from our frequency scan we have a very noisy frequency.  Without DFS we have very few open channels.  Due to this, the results you will see later are not optimal.  The limiting factor is the noise on the band.

After much channel selection, this is what we ended up with. As you can see we are just running a 40mhz and a 20mhz channel.  This is because the band is so noisy.

As a result of the frequency, this is what we have ended up with for quality and capacity. The second radio is less than optimal, but it is passing solid data.

So what do speed tests look like across the link?

Single Radio Speedtest

Using channel bonding

Some of you may still be asking, it should be more. If you have noticed the noisy frequency band has been the greatest factor on this link.  In the quality and capacity screenshot, you will notice the 2nd radio only has a 45% capacity.  This is due to channel selection. If we could get better channels this would improve the link.

Wo what is the answer? Better backhaul antennas are upgrade number 1.  Currently, we are using UBNT 2 foot dishes, which were chosen due to the gain needed on this link. Secondly, when DFS is certified for these radios we will have more channels available.  The frequency scan shows the DFS channels are less noisy in this area, which will increase throughput.

Just for giggles, we had the tech on-site run a speedtest.  This was through a wireless router with a 100 meg ethernet port plugged into the local router.

 

Frequency does matter

Recently we installed a PTP 550 link for a client.  This is a connectorized version with 2-foot dishes on it for a four-mile link.  Overkill you say, but the idea is the dishes make up the gain and not transmitter power.  A much cleaner signal can be achieved which falls within the FCC guidelines for total EIRP.

So let’s get to it.  Our first image is out path.  This link had clear line of sight from a 150-foot foot water tower to a 240-foot tower.

Google Earth Path

The 240 Foot tower

150 Foot water tower

After getting out of the cold we let things burn in for a few days. This is what an initial spectrum analysis looked like.

Radio Frequency set on 5820 mhz

Radio Frequency set on 5200mhz

As you can see the RSSI was within 2 DB, which isn’t terrible.  However, due to interference, the MCS rates are markedly different, which is what results in the big differences in speed.  Please note this is only with one radio enabled and on a 20mhz channel.  We fully expect bigger speeds once we up channel sizes and enable the second radio.

From the archives – Evolution of a network guy part 4

In 2006 I was hired on part-time for Purdue University. My days would consist of mornings on Campus at Purdue doing I.T. support for the Agronomy Department and afternoons, evenings, and weekends doing support and build-outs for NDWave.  We were in the mode of dumping everything back into the company to get to a solid sustainable position.  I didn’t really want to go back to desktop support, but the benefits and part-time position helped to pay off bills we had accumulated with MTIN.   Purdue allowed me to meet Donnie Payne.  Donnie is an infectious personality sort of person.  Just being around him motivates you to do things.  Purdue allowed me to work with Mac OSX Xserves, cutting-edge Linux servers, and special projects.  One of the coolest projects I worked on included remote sensor trailers.  We had servers, remote reboots, and had to deal with how to get connectivity out in BFE.  Several sites had cellular or satellite uplinks. I was able to apply my ISP knowledge to this project.

NDWave exposed us to lots of rockstars in the ISP industry.  JohnnyO and his crew helping with removing feedhorns from a tower is something I will never forget. Sitting outside a hotel with him cooking dinner.  Guys like Chuck Hogg, who helped the industry in several ways and is just a plain cool cat.  The work alone has opened up friendships which were well worth any long days. Guys like Jay Panozzo, who are not directly connected with the WISP industry, but have their parts.  Jay owns Midamerica Towers and is a Man among men.  Jay sets the bar for the tower professional.

I continued to dedicate time to Purdue and Ndwave until April 2008.  One month before Omnicity took over management of the NDWave network I became a full time employee. Omnicity started out good, but quickly went downhill after a year for me.  With all the lawsuits in place that is about all I will say about that.

After being separated form Omnicity I continued to keep my head above water with steady consulting from companies I had helped over the past couple of years. Kenny Johnson at Mooreland ISP and Scott Reed at NewWays were two of my best customers. I truly understood what it was like to be the one the buck stops with.  When you have a tower outage at 1AM. the customer does not care except they have no Internet.  Early morning climbs to repair Aps in the dead of winter were not uncommon.  That is part of what it takes.  Being a former owner really helped me connect with what these guys are going through.

Things were slow so I was able to re-group some.  I did not mess with much technology except when I had to.  I took a step back and concentrated on the activities I enjoyed.  I stepped up collecting G.I. Joe figures visited more friends, and generally did non-tech related things.  This in itself expanded those I call friends.  My mind and soul needed that healing.  Then a funny thing happened.  I started writing this blog, becoming active on mailing lists again, and generally became interested in the technology again.  I started gaining more and more consulting clients and working with more and more networks.  Ubiquiti was just starting to come on the scene, Mikrotik was a mature platform, and prices were starting to come down on gear.  I remember sitting around 3 years ago thinking I needed to step up what I am doing.  It took me up until then to realize I had enough experience and stuff running around in my head to be an expert. I have watched so-called experts screw up even the simplest things.

In the past couple of years, things have really blossomed in the Industry and I have had the pleasure of being a part of some of it.  When you look back on this there are certain key points where you take leaps and bounds.    Once I was able to step back and further enjoy things that next leap up was taken. This allowed me to open new pathways of thinking too.  My confidence soared, my shyness subsided, and life got better.  I attribute this to those who have influenced my life, and the experiences we have shared.

Stripping wireless gear off a 120 foot tower in Chicago with Mike Hammett is one of my fondest memories.  The work was hard and long, but having the comrade in arms with you to do it make up for it.   There is a bond that is formed which last a lifetime.  Mike is one of those guys you want to see succeed.  I am fortunate to have been in a position on a couple of occasions to help him when it would have been a paid for him to hire it out.

This brings us to present day…

Continued in part 5 (the conclusion I promise)