[SMCARA] Noise/RFI

[Bill Jones]

Well, if all breakers have been tripped and off and nothing on.
Eliminates all but UPS connected devices. This includes the heat pump
and air circulator. UPS can be turned off also but have to do it at
the UPS. That would eliminate about 99% of anything in the house
except for the external power meter from SMECO. Did this just start or
a timeframe when something was done to the house or any modification
to the house or a neighbours house?  Can the problem be duplicated
from a mobile unit near the house or by it outside to see if there is
a bad RF ground? Just some thoughts...

Bill
KC3DEZ

On Fri, Dec 19, 2014 at 4:16 PM, Sam Leach <sam at teamsupportatlantic.com> wrote:
> Check for "uninterruptible power supplies" associated with computers.
>
> I don't know what they might do on HF, but I had one making a terrible
> spectrum of noise on VHF. Of course, tripping the breakers or unplugging it
> did nothing because the thing kept running.
>
> Once identified (using my FT-817 and a 5 el 2 meter beam), I carried it
> outside and tossed it the trash still running!
>
> The noise was gone!
>
> 73
>
> Sam
>
> -----Original Message-----
> From: SMCARA [mailto:smcara-bounces at mailman.qth.net] On Behalf Of Clarke,
> Tom AIR4.0P NATOPS
> Sent: Friday, December 19, 2014 15:29
> To: SMCARA Reflector
> Subject: [SMCARA] Noise/RFI
>
> Wayne, WD4MNP has been experiencing a lot of RFI that appears to be external
> to his house.  He tripped every breaker in the box, as well as the main
> feeder breaker, and the noise was still there (rig running on battery!).
>
> Has anyone experienced noise from the new "electronic" power meters now
> being installed by SMECO?  That noise would not be affected by pulling the
> main feeder breaker. SMECO would have to come out and pull the meter in
> order to make a noise reading.
>
> Does anyone have an 80 meter DFer?  That would help nail down the source.
>
> FYI.  I have a fairly (2-3 yr) recent Trane heat pump with variable speed
> blower feature.  The motor control unit makes a bunch of noise!  Toroids and
> shielding some wires helps, but it still cranks it out.  Strip lighting that
> uses switching power supplies are horrible. Some Routers are noise makers.
> Some flat screen/plasma TVs are notorious as are light dimmers.  Anything
> with an electronic "brain" is suspect.
>
> 73 Tom/W4OKW
>
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KC3DEZ
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