You can buy NanoVNA-H4 from the zeenko store. NanoVNA-H4 is now sold by zeenko in version rev4.3.
It should be noted that the MCU used in the NanoVNA-H4 rev4.3 is the STM32F302CBT6. We have tested that the STM32F302CBT6 has the same RAM and ROM as the STM32F302CCT6.
Since no additional STM32F303 functions are used on the NanoVNA-H4, the STM32F302 and STM303 use on the NanoVNA-H4 are identical.
