When I started my ham radio activities back in the mid 50s,
there was activity to aim antennas (large scale VHF dishes)
to one star that is 11 light years from earth.
Ir being 22 years since high power VHF TV signals had gone on the air, the idea that a planet within this star would have had time to pick it up and return a signal.
Of course nothing was heard, but it was a good idea.
Normal radio signals, below the VHF range, are restricted from going into space by the ionosphere.
The SETI program was set up in 1995, using the huge antenna in Puerto Rico, but funding has dwindled, and the program continues with only volunteer radio astronomers.