[RFI] 48v DC Clean Power Supply

[Jim McCook]

Jim, thanks for the ideas.  I'll look through that NCJ article again.  
Addressing a possible common mode problem is a good idea.  That makes 
perfect sense.  Paul at ARRL thought so, too.  My real challenge will be 
getting this particular neighbor to cooperate, since he's basically 
hostile.  Paul also had a suggestion which was to look at EMI filters 
for this purpose at DX Engineering:

https://www.dxengineering.com/parts/dxe-iso-plus-10

--which could be a solution, except for a the POE cable that powers a 
second similar switch in his office.  I have no real concern for 10 or 
15m now, but this is a new, rebuilt house, so I want to nip this in the 
bud.  The longer I ignore the problem the harder it will be to deal with 
this guy.

Cheers, Jim
W6YA