This question specifically refers to a deleted post https://arduino.stackexchange.com/questions/77037/receive-flysky-fs-i6x-radio-signals-directly-from-arduino-using-nrf24-lo1-radio
New information has come to light at https://electronics.stackexchange.com/questions/514618/2-4ghz-radio-transmitter-and-receiver-circuits which may benefit the OP.
I am not sure if the post could be made "on topic", but the information could be useful to people that wish use the Arduino for a remote control subsystem.