Finding and Fixing RFI

[@jeremygilchrist1956]

I appreciate the time taken to make this video. I am suffering from significant powerline noise. I live on a farm, with no neighbors nearby, so it seems unlikely that the RFI is coming from another residence. I have followed the first step of turning off ALL breakers in my house and workshop (workshop has separate meter base.) With no AC coming in past the breaker panel, running the radio on a lead acid battery, still have terrible noise. It is very prevalent on 10 meters. A member of my local club has offered to let me use his handheld yagi to start DF'ing the noise. That will be my next step. I have previously tried contacting the power company. They sent out a crew several days later that said they couldn't do anything about it. After I triangulate the noise, I am going to visit the power company and provide them with the evidence. Hopefully that will accomplish something! Edited to add that the RFI seems to be irregularly intermittent. Edited again to correct a mistype.

[@UberGeekFarmer]

have odd RFI problem, I transmit above 200W PEP, my kitchen GCFI trips. Have 5 8' 1/2" copper clad ground rods, 18" apart in marsh soil (wet), uses 1" mesh flat cable from rods to shake 1/2" copper bar, with 1/2" mesh to radio, amp and accessories one per device to the ground bar. In particular 80M dipole, trips, 40M vertical with 4:1+choke balun does not, 20M dipole is good for 500W before trip, 10M vertical no problem at any power. What might be happening is 80M is inductively coupling to AC ground in kitchen GCFI outlet. I did add 13 turn in 5" chokes to both dipoles, helps some now the GCFI closest to the 80M coax works, but GCFI on other side of the kitchen still trips. I also took coax shield and inserted my security cam 12VDC power through it, as it crosses the 80M at 90degree angle. Spectrum analyzer shows very clean to spec for all bands 7610+RFK2++ so its not problem with either of these. Problems started as soon as 80M dipole was installed. Due to lot size its a W with center to longest distance is 45 degrees. Do I need to put 1/4" wire mesh on side of house to stop this. Out of ideas. Thanks for any advise. 73's J K7BIT

[@mswells7033]

My rfi consists of what sounds like television audio coming thru on various frequencies on the HF amateur bands. I have ferrites on everything, and there are no running tvs in the house, yet the problem still persists

[@ka7niq]

yes

[@Tom_2E1FUE]

I have done the switching of the mains power and 20m has gone full stop 40m still there any ideas 💡 de 2E1FUE thanks for the video it's helping indeed.

[@kevinkc3onohelijeepworld953]

Would using a Amidom k mix 2.40 cores be good for low band chocking ? Suppose to have 5000 ohm chocking ability ? Would this be good for trying to reduce broadcast bands from hitting my 160m

[@Yellwolf]

You got to be kidding? Audio! Check Heil Would have a fit

[@bigboyped]

Yes in last 12 months

[@raymondwarceneaux7423]

Diplomacy bull shit. Report the SOB to the FCC and file a complaint.

[@Jennifer-007]

At 49 minute mark, this “expert” states MPPT stands for transfer….. he’s totally incorrect, the t stands for tracking, Google it super trainer….. nice to know our dues are going to this quality education and training, they’re sure not going towards our rights in HOAs etc or his knowledge…. Glad I cancelled my lifetime membership.

[@wd8dsb]

In my opinion big mistake cancelling your ARRL membership. As an example the ARRL RFI department has direct contact with engineers at the major solar power equipment manufacturers and they are working with them to address RFI generated by solar systems. I'm working on a case right now that would have been near impossible to address without the help of the ARRL as the homeowner was not cooperative and would not even tell us who their solar equipment manufacturer was but with the one clue we were able to obtain from the homeowner in which they said their installer went out of business and what their installers name was we were pretty sure we knew what equipment the installer used based on lawsuits we found online. The ARRL was then able to communicate with the equipment manufacturer we suspected and while the manufacturer of the equipment could not initially tell us if the equipment was theirs due to customer confidentiality the manufacturer did indeed contact the homeowner and now the homeowner has contacted us and the manufacturer is now having new equipment installed at the home at no expense to the homeowner. This case would have been much more difficult to address without the help of the ARRL with our only other avenue being the FCC which is definitely something we all want to avoid considering the current capabilities/focus/staffing of the FCC, but once again the ARRL has direct contact with the FCC which would have been helpful if needed. Note: we even tried to figure out the equipment manufacturer via our direct contacts within the local power company which had to approve the grid connection but their historical records were so poor that we were not able to figure out the manufacturer via the local power companies records. The ARRL is worth every penny to us just based on their RFI department resources and the work they are doing behind the scenes likely continues to help you too even though you are not supporting them. The presenters basic description of MPPT (regardless of his mistake on the letter "T") was pretty darn good considering it was based on a question and not part of his intended presentation.

[@Jennifer-007]

@@wd8dsb You're entitled to your opinion, even if it's wrong. :)