https://www.reddit.com/r/flying/comment ... or_pretty/

Any of you tech guys understand this?

GT

Yes. I posted on using an SDR to track aircraft a few months ago but the thread died pretty shortly. In this case they are using a software defined radio (SDR) to tune to 978mhz (and 1090 to pick up ES traffic if you add 2 dongles) and are plugging it into a raspberry Pi to provide the WiFi interface. Someone wrote the simple OS to decode the information and post it to a usable format. Pretty easy and this technology has been out there for a while. It's the 'out' portion of all of this that is expensive.

The out portion is no longer expensive either. It is easier than the "in" part, and there are RPi, AVR (Arduino), and other implementations available at low (~300-~400 bucks) cost at retail, including a high rate WAAS source and a non-intrusive blind encoder 'tap', and an HDMI out for use with a cheap tablet.

They work perfectly. They are illegal to turn on. They can be used to show just how marginal the certified expensive junk people have installed to date really is.

One person has incorporated a cellular link into a RPi to be able to dump the poor FISb weather and metars for internet based nexrad and info. The FISb weather is junky for resolution and latency (up to about 25 minutes compared to 10 mins on nexrad in side by side comparisons in my area).

AB EXP folks will have a cheaper, higher performance solution available. The rest of us will have to install inferior expensive equipment.

lesuther wrote: ....AB EXP folks will have a cheaper, higher performance solution available. The rest of us will have to install inferior expensive equipment.

I don't think I agree. I believe the FAA is gonna require all mandated ADS-B out devices to meet certain requirements, just as they require of transponders now. I don't see any "experimental only" transponders for sale these days. I'm hoping that as the drop-dead date draws closer, innovation and market competition increases selection and brings down the prices for ADS-B out boxes.

Here is a unit for AB EXP, at significantly lower cost than the certified units:

http://www.navworx.com/navworx_store/Experimental_Aircraft_Transceivers/ADS600_EXP.html

I'm not holding my breath on competition bringing costs down by leaps and bounds. It took years after the mode C mandate to make transponders more affordable, and they are remarkably simple, unimaginative devices. Overhead at large manufacturers will never come down. The paradigm of big R&D, sales channels, installer agreements, etc., has been the norm for many decades. The ADS-b options available now were developed with that business model in mind to set profit and pricing levels, and it could take several years for that to even begin to unwind. Regulatory barriers to entry will continue to protect those revenue models mightily.

Seems there is a rather long post on Cessna Pilots Association about this product send me a email at [email protected] and I'll pass it along. Lots of interest

I believe he may be right!

Read the title of this thread......I'll bet I could build an ADBS receiver on the cheap too.

Unfortunately, what the FAA wants us to install is an ADS-B TRANSMITTER, not an ADBS receiver.

So, keep checking back....

MTV

Just put one together, test flight later today.

It's definitely a neat project. I've put one together and have submitted a couple of patches to the project.

It is not quiet ready for folks that aren't tech savvy; however, if you are the type of person that knows what a RaspberryPi is, you won't have any trouble getting one going.

Just built one a few days ago. Utilized the help of a tech savvy buddy. There were a lot if terms I was unfamiliar with. Unit works as advertised. Pretty stoked about it.

I built one a few weeks back. Dead simple, follow the instructions. I even downloaded a case a guy had drawing in CAD, and 3D printed it at work.

Weather works great and is nice to have. As discussed a lot of places though - you really don't have traffic functionality because you are not ADS-B out (at least not with this device).

They are also building a version with AHRS and baro pressure sensor! Pretty cool.

I used it on from FTG east of Denver to the mountains near Gunnison this weekend and had signal the whole way. It worked great. Pretty cool stuff!

http://www.eaa.org/en/eaa/aviation-comm ... -than-$120

Above is a link to the EAA article which should walk you through the process. Sounds like a fun useful project.

I ordered the parts from Amazon. I'm not super tech savvy but am going to give it a try. I'll let you guys know how it goes. Scottnt I might hit you up for some help if I run into difficulties.

I too ordered the parts yesterday. Will report back once I have it operational. Good job posting this guys, looks like a super simple project.

Well here is my unit.[emoji6]




I ordered a second SDR radio receiver to access both ADS-B frequencies. The build was super easy and the software works as advertised. I have not had a chance to fly it yet and am not in range of a ADS-B tower at home on the ground. Foreflight recognized the unit as soon as I connected to the Stratux wifi. To talk to the software on the Pi you just use your web browser and go to 192.168.10.1/#/. Couldn't be simpler to turn on the 1090es frequency. I think I'm going to order the gps ADHR chip. Oh and there was just an new up date on the OS.

I'm interested to see how it works in the air.

Wow that looks complicated. Here's mine. Cost $20. The app for my phone/tablet cost $2.50. Install the app and plug in the antenna. Zero setup, it just works.

https://www.flickr.com/photos/newps/22040013371/

Bonanza Man wrote:Wow that looks complicated. Here's mine. Cost $20. The app for my phone/tablet cost $2.50. Install the app and plug in the antenna. Zero setup, it just works.

https://www.flickr.com/photos/newps/22040013371/

What is the app?
Thanks

Bonanza Man wrote:Wow that looks complicated. Here's mine. Cost $20. The app for my phone/tablet cost $2.50. Install the app and plug in the antenna. Zero setup, it just works.

https://www.flickr.com/photos/newps/22040013371/

What app are you using and how does it work?

For me, I want the ADS-B in to Foreflight. Your radio looks like a similar SDR to what I'm using. I would think it would be easy for a tech guy to get the radio to work with a tablet. The question is how do you get it to work with a aviation app like Foreflight?

Waterboy wrote:

Bonanza Man wrote:Wow that looks complicated. Here's mine. Cost $20. The app for my phone/tablet cost $2.50. Install the app and plug in the antenna. Zero setup, it just works.

https://www.flickr.com/photos/newps/22040013371/

What app are you using and how does it work?

For me, I want the ADS-B in to Foreflight. Your radio looks like a similar SDR to what I'm using. I would think it would be easy for a tech guy to get the radio to work with a tablet. The question is how do you get it to work with a aviation app like Foreflight?

I use Avare ADSB Pro, it's basically a plug in for the Avare app which is a moving map like Foreflight. Plug in the SDR to the phone or tablet and Avare starts automatically. No setup required.