[VHFcontesting] UPS with no radio noise???

[Buddy Morgan]

 I seem to do this kind of stuff, pretty often. I would start by opening circuit breakers. Then trace to an individual device. Cable TV and FIOS power supplies are a problem. Never had a problem with a UPS. Battery chargers, especially computer battery chargers can be a problem. After you get your own house, clean, then go outside. I use my FT 817 to run down noise. I start with the 6M Rubber Ducky, then when I get closer, switch to my Arrow Satellite Yagi. You usually can nail a noise source pretty close on 432. Then you have to call the power company - some are better than others. 

There is no magic formula for running down RFI. You just have to look at everything and persevere. Hope this helps...

Buddy WB4OMG