After you beat the Mahgonay Gym Leader you go to Goldenrod and then go to the basement where where they have the souvenier shop and walk toward the photo shop and there will be a rocket grunt there and he will walk up to you and think that your a recruit and give you the disguise to get passe the guard.
Chat with our AI personalities
The following information is assuming that you are in the radio tower. You cannot move the guard out of the way. The guard is there for the duration of the game.
beat red then you can get pass
The Lavender Town Radio Tower is only accessible in the first floor in Pokemon HeartGold and SoulSilver. A security guard will tell you that after the takeover of the Goldenrod Radio Tower, they are stepping up security measures to prevent Team Rocket from hijacking their tower in Kanto.
I think you're talking about the radio tower in Goldenrod City. You have to go to the underground tunnel in Goldenrod and talk to the Team Rocket person. They'll give you a team rocket uniform then you can get past the guard.
There is no way for you to get past the Guard that's blocking the staircase in the Radio Tower in Lavender Town in "Pokémon SoulSilver."