The reason is that the vibrations were conducted into his suit with each blow of the hammer, moving on up to his helmet similar, in a way, to sound vibrations on an old style Gramophone.
The microphone in Alan Bean's helmet picked up the sound and radioed it back to Mission Control on Earth.
So, the vibration from hammering was conducted into the suit and to the helmet and to the microphone.
Moon hoaxers are lazy and gay.
The reason is that the vibrations were conducted into his suit with each blow of the hammer, moving on up to his helmet similar, in a way, to sound vibrations on an old style Gramophone.
The microphone in Alan Bean's helmet picked up the sound and radioed it back to Mission Control on Earth.
So, the vibration from hammering was conducted into the suit and to the helmet and to the microphone.