im not completely positive but i was told theres a door in the game corner and you use the key to open it. however there is a man blocking the way and i have no idea how to move him
use the basement key in goldenrod city. the key is in goldenrod.
goldenrod city
Hit switches 3, then 2, then 1.
you get the card key for the radio tower in goldenrod by saving the director from the underground basement. Talk to him and he should give it to you.
All you have to do is defeat the Mahogany leader and reach the top of Radio Tower in Goldenrod city.
In the basement under Goldenrod city mart when Team Rockets invade the radio tower.
Actually its 3,,2,1 and u get it all unlocked
you battle him
In Goldenrod city
It's in Goldenrod City. Across the train tracks, & to the left, the building on the far left will show you the stair case to the "basement". Go down a bit, & the skinny hallway on the right will lead you to the room you need to unlock with the Basement card/key.
I think that you find it somewhere in Goldenrod City Underground, after that you can save the Director. All you need is a Basement Key for G/S/C.
Team Rocket's hideout is in Mahogany town. Team rocket can be found in the radio tower and in the underground basement in Goldenrod after you beat Pryce of Mahogany town (who cannot be fought until you take down team rocket in the same town), but they have no "hideout" in Goldenrod.