How do you become a member at the radio tower in Pokemon HeartGold?
You have to beat team galactic and then talk to the man that is out side of the radio tower.
There are two radio towers in Pokemon HeartGold (and SoulSilver). The radio tower that is taken over by Team Rocket is in Goldenrod City. The other radio tower is in the Kanto Region in Lavender Town, which you will need to visit to wake up the Snorlax in Vermilion City. in lavender town and goldenrod city