I have an APC - Back-UPS PRO650 less than a metre away from my TenTec
transceiver and do NOT suffer from noise on any band ,because of this
UPS
(which is always on -line).

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i use 2 of the APC CS 500. lot of noise. i wraped both in alu-screening.
and grounded both to third pin on the mains. cleared up that noise. and,
if you use a router, check out the d-link- DI604. i used a link-sys for
too many years. they were cheap and easy to set up. tried all the known
name routers. ended up with the d-link DI-604. no noise at all. i have
a friend who's a manager for compUSA, and she let me try a bunch. this
is
wired, i didn't try the wireless units...
good luck/ just my 2 cents...
Drifter...