Since you have many devices which seem to emitting noise, maybe you have some
other device on the AC line that is emitting the noise, and it is being passed
through the UPS and power strip? I have never seen a power strip emitting
noise, although as Zack suggested it might be possible.
TorN4OGW
On Monday, July 6, 2015 11:14 PM, Marshall-K5QE <k5qe@k5qe.com> wrote:
Hello everyone....I got an MFJ-856(power line noise detector) assembled
today and was preparing to go outside and look for all the nasty power
line noise that we have. I happened to wave it around the shack and I
found some strong noise.....tracing it down, we found that all of our
APC UPS systems(except one) were emitting a boatload of RF crap!!
We also found a simple power strip that was radiating like crazy. How
can a simple power strip produce loads of RF junk??? Beats me.
So, now I need to replace all my UPS units with something that does not
make noise. I have asked a salesman type person and they don't have a
clue about RF noise. None of the UPS units seem to pay any attention to
that...it certainly is not part of their specs.
Does anyone know of a brand / model of UPS that does not emit a bunch of
RFI?? I don't need a huge UPS for each station, but I need something
that is quiet. AFTER we fix the noise in-house, we will go outside and
start with the noise that is coming in on the antennas. I know that I
have a bunch of power line noise too, but I need to have a clean house
before I start with the power company.
I also want to find some power cords, like those on computers and
monitors, that have the built in noise suppressors. I don't know where
to order those from either.
Thanks for any advice / recommendations. If anyone works in that world
I would really appreciate hearing from them.
I hope to get these UPS units replaced before the CQ WW VHF
contest......by the way, I will be looking for everyone on 6M and 2M in
the CQ contest....18 and 19 July....
73 Marshall K5QE
Phone is 409-787-3830 if you want to talk.....
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