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Re:Reverse engineering a car key fob signal by lukasm on Thursday March 14, 2024 @12:01PM (#39705663)
> Receiving/analyzing raw signals

Stock Flipper can receive raw signal.

Re:Reverse engineering a car key fob signal by mordae on Thursday March 14, 2024 @04:02PM (#39708341)
https://www.ti.com/lit/ds/symlink/cc1101.pdf

You might be able to get it to output raw demodulated FSK or OOK data without further processing, but I really doubt you are getting raw IQ samples from it.