hi in the quest 'eyesight to the blind',[this is the brotherhood of steel quest where you have to go to black mountain] could someone kindly tell this ignoramus where i can locate the key to the second floor door of the broadcast building,much obliged......

Under the back stairs, outside. It's a "rock".

oh,thanks mate,you have brightened the day and opened the curtains in my room of ignorance,...er,sorry about that