I love the way people think the Constitution matters any more.
The constitution is a piece of paper. Laws set and rights granted by the Constitution require people to actually enforce and uphold them. If there is nobody willing or able to enforce and uphold them, then it carries about as much weight and gravity as a mattress tag.
If Trump says he wants to revoke your broadcast license, and the FCC says it's going to revoke your broadcast license, and the Trump-friendly Supreme Court says they can revoke your broadcast license, then you don't have a broadcast license. Full stop. Sure, you can say you have 1st amendment protections, but if the people tasked with upholding those protections are falling in line behind Trump (spoiler alert: They are), then you might as well be preaching about your 1st amendment protections to pigeons in the park for all the good that's going to do for you.