How do i repair this?

I have a flysky fsia6b receiver, I just replaced the entire receiver and my first flight out chopped tip right off.. idk how.. but it has this barrel antenna at the end so idk if I can just cut it off and do a standard 2.4ghz repair.. also I have extras but they are soldered in. If anybody can help i would really appreciate it

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Heres a photo

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