Be extremely awsare of any "switching power supplies"
these are a nightmare, generally, in a radio environment.
Stay away from these supplies..confirm that it is not
a switching supply.
-------
Professional receivers like the ones from Watkins -Johnson have internal
(obviously high quality) SMPS

Also, the battery back up power supply has
the same problem in a radio environment...they
emit unbearable noise on most radios..particularly
on the 80/75 meter bands.
-------------------------------------
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).

Frank GM0CSZ / KN6WH

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).

************************************************** **********************
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...