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Partron22

macrumors 68030
Original poster
Apr 13, 2011
2,655
809
Yes
USB3 is known to mess with Bluetooth reception: here and here.
I just had to move my USB hub so as to get non jittery magic mouse performance.
It'd be nice to be able to see when this is a problem, instead of spending time looking for imaginary cat hairs blocking the mouse lens.
Apple's Wireless Diagnostics (hold down the option key, then click on the Wi-Fi icon in the menu bar) provides a nice graph, including S/N ratio for Wi-Fi, but I'm not finding similar for Bluetooth connections.
Something inside the Mac is reading the transmission, surely someone has written a little App so I can see what that signal looks like?
It'd be nice to find out for sure that all I have to do to decrease noise by 20 dB is wrap my hub in aluminum foil, or re-orient the SSD enclosure, instead of playing the "hey that seemed to work game.
 
I use shielded USB cables and toss the USB cables that come with the toy/peripheral I just bought. End of problem. "Free" as in the cables that shipped with the thing I just plugged into my Macs usually isn't the best solution for me.

Shielded cables are my "noise reducers".
 
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