title_body: Working on a Quadcopter. Unsure if this flight controller supports an FS-IA6 receiver
upvoted_answer: So, I don't believe the components you have are entirely compatible with one another. The FS-iA6 RX only has PWM/PPM outputs, while the BetaFPV F4 AIO 1-2S FC requires some kind of serial RX. The &quot;SPI RX&quot; module mentioned in the spec sheet appears to just be a small FrSky RC module that BetaFPV sells and not something that would allow you to connect to your RX.
  I think your cheapest mode of recovery is to get a &lt;$15 USD FS-RX2A receiver, like this listing on Amazon. This model is featured on your FC's Amazon listing, including a wiring diagram:
  
  It has a serial port output (Flysky iBus), which should be entirely compatible with the FC and Betaflight.