"Radio pulses" refers to short bursts or signals of radio waves that are transmitted in a specific pattern or sequence. These pulses carry information or data and are often used for communication or scientific research. Full definition
So it is easy to imagine that the first message from aliens may consist of radio pulses that follow a mathematical pattern. (sciencenewsforstudents.org)
Fast radio bursts appear as single, bright, very short radio pulses that have never been seen to repeat. (ebpetroff.com)
Some of the newly formed ones have been detected because their rapid rotation sends radio pulses our way multiple times per second. (newscientist.com)