"Radio signals" refers to a type of wave that carries information through the air. These signals are sent and received by devices like radios and cell phones to transmit sound or data over long distances. Full definition
This technique combines disparate radio signals from distant telescopes to produce images of far greater resolution than what any one scope can manage. (discovermagazine.com)
The technology was made to capture the maximum amount of radio signals without compromising the function or clarity of phone transmissions. (treehugger.com)
The telescopes will scan the sky for radio signals as well as carry out the most in depth search to date for optical laser transmissions. (newatlas.com)