to get the radio you have to go to goldenrod city and go in the radio tower. Anser 5 questions for the lady on the right and you will get a radio card and the 3rd gym leader will go back to her gym
The Radio Tower.
in the radio tower
fix the power plant
go onto your poke gear and look for the radio icon
The station is located near the top of the Radio Tuner.
goldenrod radio tower
Goldenrod City Radio Tower
you fix the power plant then go to the radio station talk to the guy and he gives you it
Johto's radio tower is in Goldenrod City, at the Northwest end.
You battle your mom
If your talkin about heart gold/ soul silver, you have to go to the radio tower in goldenrod city and take a quiz where Whitney is.
in the radio tower in complete the mission to get radio in you poke thing then tune all the way upwards and that is the pokeflute