[RFI] RFI from variable speed swimming pool pumps

[jimk8mr at aol.com]

At my Florida condo QTH I found a lot of noise being generated by the pool pumps about 200 feet from my indoor antenna. The inverter responsible is from CES Water Quality in Jupiter, FL. The noise is broadband, so it's not going to be helped by changing speeds. I've not tried any fixes, partly because going through condo management is a pain, and because there are some other closer sources (low voltage lamp power supplies) that are more serious. These pumps (which are for a fairly large pool) and on 50 amp circuits, with #8 wire, so it will take some serious toroids on those power leads. 



One other thing which you might consider with any pumps is twisting the power wiring from the controller to the pumps.




73  -  Jim   K8MR

 

 

 

-----Original Message-----
From: James Jordan <k4qpl2 at gmail.com>
To: rfi <rfi at contesting.com>
Sent: Sat, Jun 30, 2018 9:08 pm
Subject: [RFI] RFI from variable speed swimming pool pumps

I’ve heard variable speed HVAC units sometimes cause RFI. Does anyone haveexperience or knowledge about variable speed pool pumps? Specific model I’mlooking at is Energy efficient Pentair VS Intelliflow 1.5HP equivalent toreplace a power hog single speed at our VP5 property, but I don’t want toend up with a noise problem.My antennas are about 60' from the pump location and the SteppIR aims inits direction.Because the various speeds are user adjustable, would varying the speedchange the position of any spurs to a less critical frequency? Other ideas?73,Jim, K4QPL; VP5M_______________________________________________RFI mailing listRFI at contesting.comhttp://lists.contesting.com/mailman/listinfo/rfi