Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl3/STM32WL33/MR_SUBG/RX_CHAIN_ENG#0x0
RX_CHAIN_ENG register
Option for LNA during the EN_RX state of the Radio FSM:
Option for PGA precharge during the EN_RX state of the Radio FSM:
https://github.com/modm-io/cmsis-svd-stm32