get a toroid mix 61 or 77 for vhf (if memory serves), and windd the power cord of the switch through it about 4 turns.
You might give the ethernet cables the same treatment.
I suspect the power supply however.


Gary Lee
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> On Jul 25, 2015, at 11:29 AM, Matthew Chao <[log in to unmask]> wrote:
> 
> Hi, Folks.  It's not the radio that's creating RF, but the network 
> switch.  Seems that since I installed a network switch to enable my 
> YL to access my printer, I've had some RFI on my 2-meter rig in the 
> shack.  After turning off different possible sources, I traced the 
> noise to the network switch.  Now, what's the best way to reduce the 
> noise?  Pretty amazing how, for once, it's not our radios that are 
> the culprits, but a piece of consumer electronics, hi, hi.  Thanks 
> for any advice you might have.--Matt, N1IBB.