Re:Hidden Networks in TP-Link Routers
by Piskvorrr on Wednesday December 22, 2021 @10:23AM
(#29650481)
Um, no. The "airport radio" in question is weather radar, which does directional scans and is very sensitive to interference. Just choose the wrong regulatory domain, and you're messing up the spectrum in ways that are mostly invisible to you.
https://en.wikipedia.org/wiki/Dynamic_frequency_selection
(some devices try to avoid this by scanning the spectrum for weather radars...user indignation at unavailable channels follows)
> The "airport radio" in question is weather radar
Ah, ok. Weather radar is very different from "airport radio". For the latter I have a very hard time seeing how someone's ordinary wifi router could cause interference, but weather radar antennas have to be much more sensitive.
No, there isn't, because it's perfectly possible to limit what frequencies and power levels the hardware can emit without affecting the ability to run custom firmware such as OpenWRT. The certification argument is a dodge used by router manufacturers to avoid having to give customers what they actually want.
> There was already an airport whose radio saw interference from extra powerful 5ghz wifi routers.
Anyone who is radiating enough power to interfere with airport radios is doing something a lot stranger than just flashing custom firware like OpenWRT on their router. Such people are easily stopped without having to lock down devices.