What was the "Wow!-signal" and why that signal is a mystery?

What was the "Wow!-signal" and why that signal is a mystery? There is a possibility that so-called Wow!-signal, was some kind of synchronization mark for the unknown data network. That would explain the mode of the signal "6EQUJ5". This theory bases that the theory that numbers at the beginning and end are meant for attention mark or for telling the begin and end of the message for the relay stations. And letters "EQUJ" were channels what was chosen. The thing is that fully working GSM communication needs four channels. Two are received for the sending and receiving speech, and two are reserved for transmitting and receiving data. In 15.8.1977 the "Big Ear" telescope of the Ohio state university received signal, what came in frequencies 1420,356 MHz and 1420,456 MHz. The signal came from Sagittarius, and somehow the source of that signal is a mystery because the structure of "Big Ear" has two antennas, and for some reason, the system didn't register the antenna, what received the signal. On the Internet are many stories about this signal, which is consisting of letters "6EQUJ5", which is a quite interesting thing. So what makes this signal very interesting? The thing is that it came in the area, what is so-called protected frequencies, which means that it is reserved only for the radio astronomical purposes, and there is no radio transmitter on Earth what uses this frequency. The Wow!-signal sequence lasted 72 seconds, and that thing was unique, what closes the broken electric circuit off from suspicions, because of broken electric equipment would send the signal more times than once. Also, Big Ear is protected from vertical radio signals, so that thing makes the Wow!-signal more interesting than people expected. The question is where that signal came from? The thing is that the Wow!-signal can come from the distances, what we cannot even imagine. And even if that thing is the alien radio transmitting, was it meant for a message for us? There is a couple of theories about that signal what normal people have ever heard, and one is that that message was radio transmit, what came from another star, but it was not meant for us. And another is that this message has a terrestrial source, but I will return that thing later. In the first case, the radio transmission was the humanoid routine radio transmitting for their internal communication. Maybe they have not protected the same frequencies, what we have. There is a theory that the humanoids have a similar data network, what they would use in similar purposes with the human race. But where that message came from? It might come far away from the Universe, and there is a possibility that the planet, where the hypothetical humanoids would live would travel in the precise right angle behind the gravity or magnet lens, what causes by some neutron star. And in that certain moment, the planet Earth was in the focus of that radio signal, what might come from another galaxy. But there is one more scary theory, and that is that somebody uses this protected frequency for booting the network communication systems. This theory continues, that if the datalinks of some radio-based communication network would for some reasons lost the contact, the system sends the new settings by using that frequency. That thing might be that systems say "turn to use channels "EQUJ", and the numbers of the beginning and end of those letters would be "stan by" and "end" marks, and I wrote about this thing at the beginning of the text. But there is one explanation, what would explain that signal very well. Maybe in some laboratory was tested hydrogen-laser. In hydrogen lasers, the hydrogen atoms are stressed by using electromagnetic radiation, and it works in the same way as other chemical lasers. So that system could send that message accidentally. But there is a possibility that someone would test the military communication system, what would send the radio transmission by using the prohibited frequency. https://en.wikipedia.org/wiki/Wow!_signal https://www.youtube.com/watch?v=10c7TzHVsZw&feature=youtu.be