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The receiver is already integrated on the boards, and its on uart 2 you don't have to connect another receiver, but if you want to use another kind, there are boards that already have other kind of receivers integrated. The mass is an issue, you don't want your receiver to be heavier than your whole quad :D
Hello,Could you please link to the FC you have in mind?
Yes, what is important is that you have compatible receiver and transmitter. That one should work.
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