Computer Hope

Hardware => Hardware => Topic started by: Geek-9pm on February 22, 2018, 04:17:23 PM

Title: Unusual RFI in the 5 G wireless band reported.
Post by: Geek-9pm on February 22, 2018, 04:17:23 PM

This is for reference.
RFI stands for Radio Frequency Interfere. It can happen at any frequency., but the lower frequencies often have more trouble. Evne devices not intended to radiate can generate enough radiation to cause interference. Even a small switching power supplies  were found to be doing it.
https://www.houzz.com/discussions/2435737/low-voltage-pucks-causing-radio-interference

Some have thought that the 5G wireless band is not subject to the kind of interference problems that have been reported on lower frequencies. The is not absolutely true. Here are some references.

Intel has reported that a USB 3.0 device can interfere with a 802.11 wireless device in the lower band, namely 2.4 GHz and could suggests  using 5 GHz as a solution. Instead, they recommended shielding the USB 3.0 device to prevent unwanted radiation.
https://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-interference-paper.html

That 5 GHz can get RFI has been reported.  Here is a link.
http://techgenix.com/tips-assigning-wi-fi-channels/
He says they just might be others using the 5GHz near you.

PCWorld magazine had an article about the 2.4 GHz and 5 GHz choices.
https://www.pcworld.com/article/228859/dlink_wireless_bands.html

Quote

...standard can move up to the higher-frequency band to take advantage of additional channels that are less prone to interference than 2.4GHz.

He said less prone to RFI. But there is still some interfe4rence and in a specific case it can be worse.
Even after years of use, there still is not quick and easy way to solve wireless interference problems. Here is a recent article about what you can do to reduce interference in the WI-Fi bands. He draws attention to things you did not think would happen. Christmas decorations.
https://www.networkcomputing.com/wireless/7-wifi-killers-may-surprise-you/1158544899

Title: Re: Unusual RFI in the 5 G wireless band reported.
Post by: patio on February 22, 2018, 04:27:01 PM

It's not even deployed yet Geek...

And 2 of the 3 reference links you posted have nothin to do with the Topic...

Title: Re: Unusual RFI in the 5 G wireless band reported.
Post by: Geek-9pm on February 22, 2018, 04:30:26 PM

Which two?
They are all relevant.