RE: Why does 2.4 GHz draw more power than 5 GHz in STA mode (underwater test), while throughput drops?

Ziyao Zhou — Wed, 08 Oct 2025 14:33:48 GMT

Thanks for your reply, but I believe 5GHz have higher attenuation, so why 5G perform better than 2.4GHz? And if we use UDP, do we have Retransmissions here?

RE: Why does 2.4 GHz draw more power than 5 GHz in STA mode (underwater test), while throughput drops?

Håkon Alseth — Wed, 08 Oct 2025 08:20:47 GMT

Hi,

[quote user=""]What mechanisms could make 2.4 GHz draw more power than 5 GHz in STA mode under these conditions?[/quote]

Retransmissions due to dampening of the signal strength.

[quote user=""]Why would throughput on 2.4 GHz fall too much? Any band-specific rate control/fallback behaviors that explain this?[/quote]

Water absorbs the 2.4 GHz signal, and all radio devices out there on the marked, regardless of vendor, has this problem. This is more of a physics question than a nRF question.

Kind regards,

Håkon