MC7304/MC7354 Turning On Diversity


I need a bit of clarification on how diversity works on both these modem. From what I can gather these modems only support Rx diversity.

Should connecting the aux antennae affect the signal strength? So far, I don’t see any significant changes.

Is diversity on by default?
When I use the AT command “!RXDEN?” I get 01 which I believe it means that diversity is set to On.

When I look at the QMI command for diversity, QMI_NAS_RX_DIVERSITY, it seems I can selectively enable it for certain radio interface. Is there a way to know, which is enabled? Also, the value that needs to be passed to enable it is a bitmask called rx_chain, what is Rx chain? Is it which antennae to enable and use?

Thank you