BUT technically we are at war, and you can operate a private radio station under the law.
However just resending another company's signal might be illegal. But the FCC can't do anything if you operate a radio station under time of war.
And to other post, sorry I didn't read the OP correctly, I'm sorry.
U.S. Code of Federal Regulations title 47 section 73.3542
Thanks to George Bush for declaring the "War Against Terrorism" and U.S. Code of Federal Regulations title 47 section 73.3542, it is now technically legal to operate a radio transmitter with out a formal license.
from:
Pirate Cat Radio 87.9fm
More sources available if you don't believe me.