Hunting Down Power Line Noise and Other RFI

[@prepr8725]

great video thanks

[@radioaficiona2]

Excellent presentation, I have learned a lot. Thank you so much. 73👍📶

[@N4HAY]

Thank you for this excellent and most professional presentation. I plan to follow the recommendations in this presentation. 73 N4HAY

[@youtubeaccount931]

Great presentation. A worthy endeavor!

[@survivalcomms]

Excellent presentation. Thank you so much for putting this together.

[@mackfisher4487]

Thank You Jeff, great presentation. Very generous of you to make your RF mapping tool available, we use commercially made GPS/receivers for coverage testing of digital RF systems, which are impractical because of their cost. Your home brewing approach is commendable. Sounds like the power company hired you for solving some of their own problems. 73

[@mattbw-G5MAT]

Great video, really incredible solution and so useful. Is the software or something like it available anywhere?

[@HeyBirt]

Since the RFI is caused by arcing through the insulator/arrestor I wonder if a sensitive IR camera could spot a bad insulator/arrestor.

[@josegermanparra6064]

Many thanks for your excellent presentation. I am about to embark in locating a very nasty RFI source. Your presentation has been very useful. One question: what about using a small amplified loop in the 80m or 40m band rather than the yagi at 136 MHz?

[@dennisyounker2422]

Great presentation. Sorry, I do not see reference to solder ground on metal Amphenol ethernet connectors on the Mouser site. Can you provide a link please? Thank you!

[@DishNetworkDealerNEO]

Where did you obtain the dish from? Can Dish Network Satellite dishes be retrofitted to make this ultrasonic reflector? What is the part number of the sensor? And is the electronics pack an audio amplifier or is there a mixer to bring the ultrasonic frequencies down into the audio spectrum for listening purposes?

[@donalddesnoo5303]

Neighbor had a thermostat heating knocking out our TV on ant. Yrs ago .

[@ultrasoundguy1]

I suspect the main problem with switchers is that the designers are under severe cost constraints (e.g. I've purchased CFLs for under a dollar), and as a result they can't afford to have much if any concern about RFI. Until regulatory institutions become involved there's nothing to drive improvement in the basic technology, which is what's really needed. Tesla doesn't offer the AM band on their car radios for this reason, so one can infer that EVs will become a major source of switcher hash as they become more common, which is understandable due to the very high switching currents. I noticed TI tried to specifically address this AM band hash, but was disappointed to see their solution was to simply move the switcher's fundamental up to 2 MHz, and so the interference levels will be even worse in the HF region.

[@mikewillliams7044]

where can one obtain the software?

[@j7ndominica051]

I've replaced the some power supplies with unregulated since the router can accept a range of voltages. Do you use shielded ethernet cable around the house?

[@user-pm6iz1yc2i]

I have people who are harassing me with some type of ultrasonic infrasound emf frequencies. I hear them in my house there not physically there but I can hear them. These people have been doing these type of things for over 3yrs. They come to my house, my job, connect to my car pretty much anywhere I go they're there. Not physically there but i hear them. How are these people doing this with light and sound making these frequencies and they mess with my nerves in my body. Im trying to catch these people who are doing these type of antics. They create high and low pitch frequencies and direct a current at me and afterwards it makes me feel nauseous and discomfort. How are people connecting to my house and buildings i go to remotely. Is it through peoples wifi, hvac systems???

[@gregmorris6604]

Get a toboggan with ear flaps and line the inside of it with tin foil. Wear it and see if it don’t stop the signals.