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Forum Discussion
New RAX49S Hissing Sound
I recently just got a new AX5300 (RAX49S) router from Best Buy. After updating the firmware and setting it up I noticed whenever I have a device connected via wifi I hear a hissing noise coming from ...
That may be due to coil whine, think of it like what happens with a video card when updating the frame buffer very rapidly.
https://www.youtube.com/watch?v=GUzCXF3oMD0
WiFi radios can experience similar behavior especially if in a situation where it is doing airtime sharing where the device will be changing power states very rapidly (going from effectively sending out 1 watt of RF and then suddenly dropping to 0 when waiting for more air time in a more crowded environment).
Pretty much any device that does inductive loads, will have this behavior to some extent.
This video playlist can help in showing what happens when a load changes rapidly as related to inductive loads.
https://www.youtube.com/watch?v=CIGjActDeoM&list=PLBF35875F73B5C9B5
Years ago I remember the original Netgear R7000 had this issue, some people could hear it while older people like myself could not, it was coil whine. Graphics cards can get it and so can gaming consoles too. Sadly there is nothing you can do about it really. You could try another unit in cause this one is bad but I imagine they all have this issue.
