Hello, Shmj, you wrote: S> to you send a box, you put at yourselves its houses, connect the antenna and through yours spy for planes All lawfully, I joke, certainly. S> but send only if your geographical position is interesting. Send free of charge if the geographical position is interesting. For money and so send. Free of charge not only they send. A principal condition 24/7 connection of this disappear with the Internet that other users could receive from a box (and especially service). Some on $500 a year give bonus access to the service. But all it for operation without the computer. For the computer it is enough to buy ADS-B Dongle, sentences full. Here, here, here... Well and a software it is in addition necessary to put.