It is in Goldenrod in Johto. Once you get to Kanto, there is one in Lavender Town.
Never.
goldenrod city
at the kanto radio tower
goldenrod city johto
You need to get a Team Rocket-outfit which can be obtained in the underground road in Goldenrod just south of the Radio Tower. After obtaining this you can access the other levels of the Radio Tower. After that it is pretty straightforward.
it is impossible to reach the top of the radio tower in kanto or jhoto,sorry.
You cant, it gets nuked.
you need to get team galactic out of there.
You have to beat team galactic and then talk to the man that is out side of the radio tower.
You can't
you can go to blackthorn city
It is north east in lavender town