Not only the RX8200. Also similar professional boxes like Ateme or Sencore.
But I'm not sure that knowing the key would be enough without proper decoder authorization by the broadcaster.
Yes, that is correct, Ateme DR5000 or Sencore Inpulse 400D are some valid and best-known receivers, but all of them are for professional use and are not within the reach of an amateur user. I only named the RX8200 because it is one of the best known. Regarding knowing the Biss2 key, it is enough for viewing, but we are going to indicate some important details; The key is normally not provided to anyone, to avoid leaks through forums, groups, networks,...... Instead, the recipients of those who have lps rights for the event are enabled and in this way it is not necessary to provide the key to anyone. As many of you know, the key can be dynamic and can be changed in the middle of the event without any type of interruption in the image. It is also possible to put 1 different key every so often, if they are previously known, you can include them in the decoder menu (they do not need to be in any order, it works in any way) But since the events encoded in Biss2 are of a high level, it is very rare that you can obtain a key to prove it. I encourage people to contribute any information they may have.