You have to beat team galactic and then talk to the man that is out side of the radio tower.
Thursday radio
goldenrod city johto
goldenrod city
at the kanto radio tower
Never.
The Kanto radio station in both Pokemon heartgold and soulsilver is in Lavender Town.
TURN ON POKEGEAR AND TOUCH THE RADIO ICON[picture].
You cant, it gets nuked.
you need to get team galactic out of there.
Save it for later
you have to dress up as a team rocket member at that one tunnel in goldenrod city but he might not give it to you
update your radio It'll be the middle line on your radar at the top