Category Archives: Aviation

Monitor local Aircraft (for baiscally free) using Stratux

An ADS-B listening station has long been on my list of things to build.

Our current residence is located right under the domestic approach to San Francisco International Airport (see picture), so I believed there should be plenty of data for testing and tuning.

Local Air Traffic


What is Stratux

So, what are we talking about here? It’s Stratux, and Open Source complete software package that leverages inexpensive SDRs (Software Defined Radios).

“Stratux is a homebuilt ADS-B In receiver for pilots. It’s easy to assemble from inexpensive, off-the-shelf hardware, and probably already works with your electronic flight bag (EFB) of choice. Even better, if you’re so inclined, the software is open-source and hackable so you can build the system that’s right for you. “

This is some powerful stuff!


The Raspberry Pi 3 (revision b)

Raspberry PI 3
After completing a proof-of-concept residential IP space data acquisition project for a client, I found myself with a Raspberry Pi just sitting on shelf.

The Raspberry Pi 3b is a neat little device. A full Linux computer in a form factor the size of a pack of card, including a graphics chip that drives and HDMI output making it a real (compact and low power) desktop project computer.

SoC: Broadcom BCM2837
CPU: Quad-core ARM Cortex-A53, 1.2GHz
GPU: Broadcom VideoCore IV 3D graphics
RAM: 1GB LPDDR2 (900 MHz)
Networking: 10/100 Ethernet, 2.4GHz 802.11n wireless
Bluetooth: Bluetooth 4.1 Classic, Bluetooth Low Energy
Storage: microSD
GPIO: 40-pin header, populated
Ports: HDMI, 3.5mm analogue audio-video jack, 4× USB 2.0, Ethernet, Camera Serial Interface (CSI), Display Serial Interface (DSI)

My first Raspberry Pi purchase (as requested by the client) was a complete kit that cost me about $75 [ link to super size kit ], but you can certainly get the bare Raspberry Pi for under $40 (assuming you have some spare things like a micro-USB cable and a micro SD card).

Adding ADS-B radios

Adding ADS-B radios to the Raspberry Pi was as easy as ordering a kit form Amazon for under $40. [ Dual-Band ADS-B (978MHz UAT & 1090MHz 1090ES) Bundle For Stratux ]. For some reason, I’d debating buying the radios and building a kit. There are several complete kits with the computer, radios, specialized case, memory card etc. Prices vary between $120 to $250 depending on what parts you want. When I found this little kits with 2 sets of antennas, radios and coax for under $40.. it was just too easy to pull the trigger. So far they have been well worth the very inexpensive purchase!

Assembling the Sysetm

Custom Stratux Pi Case
Being a proof of concept, I didn’t feel like dropping another $20 on a specialized case such as this one (right), because I wasn’t sure if I’d be happy with this project.

The previous projects housing was too small (in my opinion) to provide what I wanted, which was a single item housing all the parts. Again, wanting to minimize costs while building project, I opted to re-purpose an small plastic ammo can into a make-shift housing. The unfortunate side effect of that decisions is that the final product looks like some sort of nefarious device (see final photos somewhere below).

Using the drill press / mill I have setup for another project, I quickly milled some vents to the plastic box to vent out the heat created by the Pi and the two nano radios. And believe me, this is something you want to do. Using the Stratux software, I’m typically seeing CPU temperatures around 140F (toasty), and the radio run a lot hotter.

SDRs installed into Raspberry Pi
Hot enough to blacken the decals I’d put on the bottoms of the radios (this is what they looked like before they were cooked).

Once I had all the milling completed I installed the radios, Pi and coax into the box. The coax are reasonable flexible but still barely looped around inside the box. This photo was before I added another port for an Ethernet cable (that hack to be discussed in a subsequent post). It might not look pretty, but it does work!

Milled ammo box
SDRs and Pi installed in the ammo box.
Final Stratux in Ammo Box project

Making it all work

Once the physical construction was done, the last step was to download the software, burn it to a little MicroSD card and fire it up!

UPDATED: 14-MAY-2017 — I have a new setup procedure documented in this newer article: STRATUX – Hacking together a WiFi connected Ground Station.

What does it look like?

Once you have connected to the ad-hoc stratux WiFi network, navigate to this IP address: http://192.168.10.1 . If your system is up and running you’ll see a page that looks like this:

Stratux landing page at 192.168.10.1

If you have some aircraft overhead (as I almost always do), you should see them listed on the ‘Traffic’ page. This is what mine looked like just a few minutes before writing this article:

Stratux Air Traffic page

Now that you have this up and running, it can provide a GDL 90 data feed to variety of flight planning / monitoring software, including some free apps for iOS and Android. The full current list of software supported on the Stratux main page. Here is a snapshot of software support at this time:

Stratux Software support


Fleet Week 2016 – San Francisco, CA Airshow photos (series 1)

Fleet Week is always one of (if not THE) best Air Show on the West Coast. A large aerobatic box over the San Francisco Bay means a lot more latitude with the types of maneuvers that can be performed.

Here are some of the highlight pics from yesterdays performances.
feeltweek2016-navy_leapfrogs-001

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feeltweek2016-patriotsjet-001

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feeltweek2016-navy-blueangels-001

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TAGIT!
#wearefleetweek #USNAVY #NAVY #breitlingjetteam #blueangels #f22raptor #heritageflight #UnitedAirlines #PatriotsJetTeam #FleetWeekSF

F-22 Raptor at the California International Air Show

Below are photographs of the Air Force’s latest superiority fighter, the F-22 Raptor. In addition, there are also photos of the USAF Heritage Fly-by with the F-22 and P-51 Mustang in tight formation.

Photos taken at the 2015 California International Air Show – Salinas California.

F-22 Raptor


F-22  Raptor
F-22 Raptor showing some vapor during a high speed turn.

F-22  Raptor
F-22 Raptor right at the threshold of MACH 1.
F-22  Raptor
F-22 Raptor with afterburners lit
F-22  Raptor
F-22 Raptor in a high-speed pass.

USAF Heritage Fly-by (F-22 & P-51)


F-22 & P-51 Heritage Fly-by
F-22 & P-51 Heritage Fly-by

F-22 & P-51 Heritage Fly-by
F-22 & P-51 Heritage Fly-by

Endeavor’s final flight – pics from it’s California fly over.

Today was a great day for space nerds (and to live in CA in general, but for space nerds especially).

It was the last flight of Endeavor, aboard it’s carrier 747 en route to L.A., where it will be installed in the science museum located downtown.

I was not sure I could make it to Moffet Field for the fly-over, so when we heard it was also going to make a low pass over the Monterey Bay and the Aquarium, it was all systems go and a road trim in the new (to us) ML was quickly underway.

The crowds were impressive! Thousands of people lined the beaches along the south end of the bay to catch a look at this historic event. The fog, though, seemed like it was going to conspire against us and send everyone home a little sadder than the day started.

However our luck broke, and so did the fog. Some of use were watching the live NASA feed as it crossed over Moffet Field on it’s way. Less than 15 minutes later we were treated to the sound of jet engines and this emerging over the beach. It was… FANTASTIC!!!

I captured a total of 26 photos, basically of the same aspect. Here are the three I liked the best:

Space Shuttle Endeavor on it’s last flight. Flying over Monterey Bay on it’s way to it’s final home in Southern California.
Space Shuttle Endeavor on it’s last flight. Flying over Monterey Bay on it’s way to it’s final home in Southern California.
Space Shuttle Endeavor on it’s last flight. Flying over Monterey Bay on it’s way to it’s final home in Southern California.

End of an era is before us. I recall the first Shuttle flight, and the last. And of course the two terrible accidents in between. There is but one shuttle left at Kennedy’s preparation center. Soon it will be towed across the Space Center to it’s new home there, on display at the visitor’s center.

Good-by OV’s your are missed already.

California International Air Show 2011

It was a warm and sunny day along the California Coast for the last day of the California International Air Show, in Salinas CA. Only 45 minutes south of my friend’s hose in Santa Cruz, CA. it was easy to plug this event into the last day of my vacation.

After 2 weeks in the sun, I needed some shade. Another full day in the sun and I’d likely return home with a burn, so I lobbied to purchase the VIP Flight Deck tickets. It was an easy sell. The flight demonstration teams always work in a couple of extra tricks right in front of the VIP seating areas, and we’re at an air show after all. Accommodations where good. Food, snacks, soft drinks and a fully bar were all at our disposal, and the first round of drinks were included in the price.

The performances were great. Plenty of jet action in the air.

One of the highlights of the show was the TORA TORA TORA performance. It’s a 10 minute show using aircraft from the original 1970 movie TORA TORA TORA. It’s a sight to see, so I’ve uploaded video shot with my little Canon camera set on the fence (it get’s bumped a few times so the framing missed the final WALL of FIRE, which I found unfortunate).

When the SnowCones took to the air, we decided to move onto the static displays. I’ve seen the very polite and nearly silent (and I’m sure very environmentally conscious) SnowCones enough times to fall asleep during their show. I had a 900 mile drive ahead of me that night, and I needed to remain alert. Oddly the couple of times I looked up into the sky, they always seemed to be speedily (albiet quietly) flying away… hm… I wonder if they are all French Canadians…).

So off to more interesting things likes Cessnas and Piper Cubs.

American Heros Day – Boeing Museum of Flight

What a fantastic Day at Boeing’s Museum of Flight. It was American Heroes Air Show at the museum. A day dedicated to the men and women that keep America safe by protecting our borders, fighting crime, rescuing us when we are lost or in peril, and saving lives when immediate medical care is required.

The morning started out very slowly. With less than ideal weather over Boeing Field, but the people still arrived early (before 7:00 AM) to watch and photograph the helicopters as they arrived. All were scheduled to arrive between 7:30 and 10:00 AM. Breakwater Insurance was on hand to provide complementary coffee, hot chocolate and muffins for the small crowd that had arrived 3 hours before the museum opened, to watch these wonderful aircraft arrive. They remained outside, in the weather serving the crowd late into the morning. That was appreciated.

We’d heard one helicopter transit the airfield above the clouds, so there was a brief bit of excitement, but after 10 minutes, we didn’t hear it any longer, and it was gone. People didn’t give up though, and at 8:30 AM, the thrilling arrival of the first helicopter via air (A King-5 news helicopter arrived before hand, on a trailer…. much to the crowds disappointment!).

First to arrive was the US Coast Guard in their short-range rescue helicopter, the Aérospatiale HH-65A Dolphin.

USCG - Aérospatiale HH-65A 'Dolphin'

They made a quick approach down the main runway, and then landed just outside the tarmac gates for the museum.

USCG - Aérospatiale HH-65A 'Dolphin'
USCG - Aérospatiale HH-65A 'Dolphin'

Not more than 10 minutes later, the second USCG helicopter arrived to the field:

USCG - Sikorsky HH-60J 'Jayhawk'

To say that it arrived with a lot more flare than the other helicopters that morning, would not be an overstatement.

USCG - Sikorsky HH-60J 'Jayhawk'

Once it had established over, the leading blades were creating just the right disturbance in the air, to create these contrails. And I’m pretty sure they were NOT splaying chemicals or conducting other experiments upon us with the contrails (that’s a contrail folks, not one of those mythical chemtrails). Unfortunately, I did not get any photos with the contrail in shark focus. :/

USCG - Sikorsky HH-60J 'Jayhawk'

Not long after the HH-60J was shut down on the taxiway, a Eurocopter AS350 arrived, and was directed to the landing area.

LEO - Eurocopter AS 350 B2

By now it was 8:35 AM, and the private museum members only presentation of the newly restored HH-52 USCG helicopter in the museum was about to begin, so AJ and myself hurried into the museum for the 1 hour talk about the history of the HH-52 (the USCG website has a writeup about this dedication).

Rear Adm. Gary T. Blore, Commander of the 13th Coast Guard District and current Ancient Albatross gave an excellent presentation of the helicopter, and related his own stories flying these historical life saving machines for the USCG. It held even the attention of a 9 year old body for the entire hour. If you wonder what the designation “Ancient Albatross” means, in short, it means he is the oldest active duty aviator in the USCG at this time (he’s retiring this summer, and the title will be passed to the next eldest in the fleet).

USCG HH-52 Seaguard

Among the stories and facts relayed. We learned;

  • the HH-52 is credited with over 15,000 lives saved
  • it has a boat hull that allowed them to land on water to recover survivors (a technique that is no longer used, because it was really quite dangerous)
  • Adm. Blore had to ditch ad HH-52 on his first mission into the Atlantic, at night, due to bird strikes that disabled the engine and severely damaged the main rotors
  • that Boston Whalers seemed be involved in an awful lot of rescues
  • they had a very limited carry capacity, despite the size, due to single motor being down-rated for cost-cutting measures (re-using existing hardware for the transmissions), sometimes only being able to pull 2 survivors at a time out of the water
  • off-shore navigation before off-shore LORAN and GPS was via dead-reckoning and that is quite difficult. Often they arrived back to the coast with very little fuel and far from an airfield, so they would land on the beach and call for a fuel truck

During the talk, several more helicopters arrived to the field. One of which was this US NAVY Rescure Hawk:

US NAVY HH-60H Rescue Hawk

With the museum opening to the general public in less than 1/2 and hour, and the new arrivals to the static displays, we hustled outside to see take it all in.

One of the first birds out was the Airlift Northwest Agusta. I see this helio a couple of times per week, landing across the street, but I still love to see these thing fly.

While talking to the pilot, I learned some interesting things about this specific helio, such as it’s complex auto-pilot allows them to fly in IRF conditions with just a single pilot. In fact, it does not even have a control stick in the left front. The only person with any controls is the pilot. And like he said, everyone on board is counting on him to be healthy during the flight.

Airlift Northwest - Agusta 109A
Airlift Northwest - Agusta 109A

Just like it’s arrival, the departure of the Chinook was an event in and of itself. It’s a pretty big bird and there seems to be a lot of work the flight crew has to do, just to get it up and rolling. LOL. But it’s such a great work horse, and an amazing thing to see taking flight, with it’s big counter-rotating main blades. Just another bright moment that day.

US ARMY Chinook CH-47D

US ARMY Chinook CH-47D

One of the last birds out, was the DEA Eurocopter. The pilot took off with a standard departure to the south, but at the end of the field, kicked the rudder hard over, banked it high and came back down low over the flight line, before completing a standard northern departure. All of those helio pilots sure seemed to love their jobs!

LEO - Eurocopter AS 350 B2

What a great event at the Museum of Flight. Even the bad weather did not damping the activities on the flight line.

It was fantastic to meet and learn from these American Heros. The people out there on the front lines of national defense, law enforcement and search and rescue. It really makes me Proud to be an American.

Fisherman’s Memorial Day in Seattle

Hey all (this is going to several people, so please excuse the somewhat general greeting),

Our director of sales at work called me Friday, and told me that him and his wife were going up to Seattle to do some things, and that I should tag along.  They we’re really specific, but I was free (no kids), and it was a nice sunny day.   Still recovering from being sick the last 3 weeks and not ready to get back on the bike, I took them up on their offer to pick me up at the ferry.  How much simpler could it be?

The day started off with a bang.  A trip to the doctor’s office for them to get flu shots.  Nope, not kidding.  But it was an interesting visit to one of those ‘concierge doctors’.  Sort of a private insurance that the well heeled like to use.   For about $80 a month they get a doctor they can call 24×7 (not just a service, but their actual doctor..)  and get advice.  It’s in interesting health care delivery model.  The one I went to was called  Qliance.  http://www.qliance.com/ Anyhow, the view for the skyscaper was worth the elevator ride, and it only too 5 minutes.

Back in the car, we fought our way (and I mean fight, this is Seattle I’m talking about) north to the Fisherman’s Terminal.  Which is where things go interesting.  Joel, the ever ‘working a deal’ sales guy worms his way into the parking lot where the crabers park their personal cars.  Which was very cool, because just a few feet away from us was this:  (were’ parked just off frame):

The Wizard - parked at Seattle's Fisherman's Terminal

Talk about timing.  They were 3 day late pulling out of port, and the entire crew was there working hard to get the boat ready to head up for King Crab fishing.  It was very cool.  The boat looks so much bigger, yet at the time, so much smaller, than it looks on TV.  One thing I’ll tell you that big ‘block’ they use to pull the crab pots up is ENORMOUS!  About twice the size it looks on video.  Now I really understand what a big deal it is for those guys to get clocked by it.
Captain Keith signing stuff and talking to fans next to his boat.
OK, so anyhow we managed to get a little bit of Keith’s time (he’s a *really* nice guy, not at all like he’s portrayed on TV, he hard a hard time excusing himself from us a few other people to get back to work.  Even after he finally went back on board, we talk him talking to other people from a port-hole on the stern of the boat.  They had a 9 day trip to Dutch Harbor a head of them.  Got to meet his brother Monty and a couple of the deck hands a well.  I’ve a lot more photos of the boat I’ll post up later.

We also saw this, the memorial plaque and small memorial shrine setup for Phil Harris:
Memoral brick for Captain Phil Harris

The next coolist thing to happen, was a Coasti MH-65 heli blasted by low overhead, cranked itself into a tight turn and then came back right over the Wizard.  You can see one of the guys waving out the door here.

USCG Helicopter fly-over
USCG Helicopter fly-over

Then we got a little demonstration of USCG at-sea heli rescue.  The pilot put the thing into a hover about 60′ feet off the water, and just off the edge of the dock.  Quite a crowd appeared!  Sorry the photo looks fuzzy, but we were being doused with water from the rotorwash.

USCG Helicopter overing over dock.
USCG Helicopter overing over dock.

USCG rescure swimmer about to exit aircraft.

It was really awesome to watch, close up, how the pilot kept the bird in such a tight hover.  It was a little windy yesterday.  Being that close to a heli in hover for 20 minutes was very cool.   Those MH-65 Dauphin helis are not that big!  You can see on the door that this one is stationed out at Port Angeles.

USCG rescue swimmer in the water.

While there, Rachael (Joel’s wife), tells us that Dan Akroyd is just a mile away at one of the stat liquor stores promoting his Crystal Head Vodka.  Into the car we hopped and blasted down to the Whole Foods store and there him and his entourage (and I mean entourage) were.   The line to get in the place wrapped around the building, but it seemed to go pretty quickly.

Dan posing with his signature Vodka - Crystal Head

That’s him posing for another person to take the picture.  After that he posed with my friend’s wife,  signed our bottles, stopped (no idea why) thanked me (for taking the picture?), shook my hand smiled and handed me my signed bottle.  He was taking the time to be friendly to everyone.  Some people we’re being real knucklheads making a lot of Ghost Busters jokes, getting him to sign Ghost Busters memorabilia, etc. etc. and he was cool to everyone.   That was a lot of fun.

After we bailed out of there, we headed back to the Fisherman’s Terminall.  Lucky for us the crowd around the Wizard was gone, they’d finished loading the last of the pots on the boat and the crew was relaxing a bit, and got to talk to them for a bit again.    We didn’t stay to watch it pull out (it was going to be a couple more hours).  Stopped at the Anthony’s Fish Bar in Belltown,  watched the cruise ships sail out and then headed to Joels.

At Joel’s, we smoked some cigars, make some cocktails with the Crystal Head (it’s goooooood!),  and capped the night off with a huge dinner at 13 Coins in SeaTac.   The ferry was going to be a really long wait so they just drove me the 70 miles home.   I got back just before midnight.

It would have been a long day for the kids, but I’d wished I’d had the chance to take them there, meet  Keith and Dan, and watch the Coasties rescue demonstration.   Oh, and the fresh seafood at the terminal..  that was pretty good too!.  I think they would have had a lot of fun.

I have 197 photos I took yesterday.  When I’ve culled the herd to a reasonable ‘best of breed’, I’ll be posting up higher-res versions.

Book: “Touching History” – untold story of 9/11

I’m a fairly avid reader, seldom without at least one book to read. In fact I have two I’m working through right now. And by working through, I mean, working. Both of these A Beautiful Math and The Visual Display of Quantitative Information are pretty technical in nature, so they are not a typical casual evening read.

Digressing, while fighting off a nasty cold, I took in a little television time on Saturday, the 9th Anniversary of that terrible day in New York City. Obviously there was little on the national broadcast crap-fest, nor the typical brain-dead cable fare to tide me over. But, I flipped onto CSPAN (a guilty pleasure, I’ll admit) and caught most of the 3 hour panel hosted by Lynn Spencer, a commercial airline pilot, whom wrote the book Touching History, The Untold Story of the Drama That Unfolded in the Skies Over America on 9/11.

I was a fascinating panel discussion. The first panel was comprised of FAA and ATC personnel that were on the front line that morning, trying to sort out disaster, land nearly 5000 planes, and re-route the remaining International flights to other countries. The second panel was comprised of commercial pilots flying when the attack happened, and Air Force pilots that had to intercept countless commercial jets, with orders to shoot if they did not comply.

Stories of a airport in Canada that was stacked 30 planes deep, fighter squadrons recalled from a training mission to be re-armed and then briefed on the rules of engagement for shooting down passenger aircraft, pilots that saw the planes hit the buildings while they were trying to land, others simple told to ‘get out of the area, just leave’.

It was a moving 3 hours of television. I felt compelled to go find this book, but sadly, our local book store (I’m not even sure why I waste my time at Barnes and Noble) did not carry it. I know I can get it online, but I’d like to spend my money local, and support stores that carry books such as this.

When I do get the book in my hands, I will be sure to read, and post my thoughts. In the mean time, you might look into it as well. If the book is anything like the articulate author I watched on TV, I’m pretty confident that I will not be disappointed.


UPDATE: 23-SEP-2010
Try as I might, absolutely no luck in finding the book in a brick-and-mortar store. Too many ‘Vampire Stories’ filling the shelves. A rather sad commentary on America’s literary tastes. Not all is lost, the book is in transit as I speak from an online e-tailer. I’m really looking forward to it. I’ll be sure to blog when I’ve started to read.

Looks like it will be here sooner than estimated!

Lynn Spencer "Touching History: The Untold Story of the Drama That Unfolded in the Skies Over America on 9/11"
    Previous estimated arrival date: October 07 2010 - October 15 2010
    New estimated arrival date: September 29 2010 - October 02 2010