undefined | Better HN

0 pointstjohns3y ago0 comments

This is incorrect. Wifi systems that don't comply with DFS show up brightly on the radar display. Here's an example from a real-world system of what a misbehaving 5 GHz AP looks like:

https://journals.ametsoc.org/view/journals/bams/97/7/full-ba...

The FCC has a list of WISP companies they've gone after for misconfiguring their wireless equipment:

https://www.fcc.gov/general/u-nii-and-tdwr-interference-enfo...

0 comments

CamperBob23y ago

Interesting, I'm genuinely surprised that's necessary. WiFi looks like white noise, and should be more or less trivial for a radar to reject.

withinboredom3y ago

If removing “noise” was trivial, we would all have perfect radios.

jamiek883y ago

What makes you think that would be trivial?

CamperBob23y ago

Years of engineering experience in RF and DSP applications.

A radar that can be jammed by a WiFi access point amounts to an HR failure at the company that made it.

2 more replies

j / k navigate · click thread line to collapse

0 pointstjohns3y ago0 comments

This is incorrect. Wifi systems that don't comply with DFS show up brightly on the radar display. Here's an example from a real-world system of what a misbehaving 5 GHz AP looks like:

https://journals.ametsoc.org/view/journals/bams/97/7/full-ba...

The FCC has a list of WISP companies they've gone after for misconfiguring their wireless equipment:

https://www.fcc.gov/general/u-nii-and-tdwr-interference-enfo...

0 comments

CamperBob23y ago

Interesting, I'm genuinely surprised that's necessary. WiFi looks like white noise, and should be more or less trivial for a radar to reject.

withinboredom3y ago

If removing “noise” was trivial, we would all have perfect radios.

jamiek883y ago

What makes you think that would be trivial?

CamperBob23y ago

Years of engineering experience in RF and DSP applications.

A radar that can be jammed by a WiFi access point amounts to an HR failure at the company that made it.

2 more replies

j / k navigate · click thread line to collapse