2) It is unlikely that even aircraft that the government desires to be secret will stop broadcasting ADS-B anytime soon, as one of the major usages is avoiding mid-air collisions when airplanes are in airspace shared with commercial airliners. Secret surveillance planes might be unpopular, but they'll only be headline news if they were to run into a 757.
3) ADS-B broadcasts won't be required for all commercial airplane traffic[2] in the US until 2020. As such, there's still quite a few airplanes without it, particularly those that airlines plan to retire within the next five years.
FlightAware has an awesome and rapidly growing ADS-B program as well. In particular, one of the easiest and cheapest ways to get into ADS-B flight tracking is with PiAware, which lets you convert a Raspberry Pi into an ADS-B receiver:
I know absolutely nothing about this so forgive me if I'm asking a dumb question. ADS-B broadcasts so that other planes can figure out where you are and avoid you, correct? Why can't spy planes stop broadcasting it, but then listen for other planes' ADS-B signals, and just make sure to stay away from them? That way the only crash might be between two different spy planes?
genuine question, what do you get out of this hobby? i'm not trying to sneer or trivialize it, i'm sincerely curious about what makes it interesting to people who enjoy it
It's just an outgrowth of the fact that I find commercial aviation fascinating, really. I'll occasionally pull up flights near where I am, but I usually use tools to track whatever flights I find interesting for other reasons (off the top of my head, for instance, American Airlines' first revenue 787 flight was today, and I watched that one this morning).
Some people enjoy tracking birds some people enjoy tracking aircraft.
If you're not into that you probably won't get it I knew a guy who was a plane spotter and he would get a kick of being able to recognize a commercial jet by its sound and even estimate it's approach and altitude. I didn't get why he enjoyed that, and i don't think that you can relate to that to understand it if you didn't decide to take up that hobby in the first place.
You ever look up into the sky and see an airplane and wonder about it?
Here in the future, the answer's no further than your smartphone! Where it's going, where it's from, what it's carrying, freight or passenger? If you're near an airport, how busy is the airport? Which runway is that plane landing on? How many runways are there? What size airplane can that runway handle?
Like similar hobbies, it's fun to play around with technical problem solving, numbers and data without the pressure of it being your real job. Often it's linked to a curiosity or experience from when you are young and you just find e tasks a relaxing escape from real world responsibilities. Also it's fun to belong to a community of people who enjoy technical talk.
1) If you are in the right area, Flight Radar 24 might actually give you the equipment for free. See here: http://www.flightradar24.com/free-ads-b-equipment for info.
2) It is unlikely that even aircraft that the government desires to be secret will stop broadcasting ADS-B anytime soon, as one of the major usages is avoiding mid-air collisions when airplanes are in airspace shared with commercial airliners. Secret surveillance planes might be unpopular, but they'll only be headline news if they were to run into a 757.
3) ADS-B broadcasts won't be required for all commercial airplane traffic[2] in the US until 2020. As such, there's still quite a few airplanes without it, particularly those that airlines plan to retire within the next five years.
[1] http://en.wikipedia.org/wiki/Automatic_dependent_surveillanc... [2] IIRC, the actual regulation is a requirement for ADS-B on all airplanes flying at 10K feet or above.