Hi Joe and gang, Thanks for the comments. I'm not looking for a home brew solution as I already know what a solution is based on my past experiences with invisible fence systems including my own. As
Hi Tony, Yes, I remember your case. I'm the one that told you about the 10VK6 back in 2016 per a recommendation I had received from the Innotek engineering department. 73, Don (wd8dsb) ______________
Hi Tony, Glad to hear the 10VK6 did the trick for you and I thought that was the case. I actually have a 10VK6 sitting here specifically for this application that I can provide the Invisible Fence in
Hi Charles, I tell homeowners that I need their help. I tell them Ive tracked down a source of interference to radio reception that Im pretty sure is originating from their property and that I need t
Here is an interesting update regarding the 20 meters broadband RFI being generated by my neighbors Invisible Fence transmitter that's not the typical RFI encountered with such systems. We tried a br
Opps, I just spotted an error in my text. I should have said capacitive reactance and Xc, not inductive reactance and XL (sorry for the error in my text). My calculations were correct, but I went bra
Hi Ed, Your "critical" information is great advice. I'm also not the least impressed with one of the local power companies (name not given to protect the guilty) that uses the Radar Engineers Model 2
I recently encountered RFI at about the worst spot on 160 meters for DXing (a 5 KHz wide signal that would wander slightly between 1.820 and 1.830 MHz). Turns out the RFI was from a Hi-Fi Digital Amp
Hi Jim, Yep, I normally first try a common mode choke using 31 material as well as a commercial differential mode filter on the power supply power cord to see which one works or if both are required.
Hi Jim, I should also mention that with the great inexpensive high tech tools we now have such as the TinySA, its much easier to isolate the problem using an H probe to figure out whats really genera
Hi Jim (K9YC), I suspect you're absolutely right about it being a class D type amp based on its size, weight, and power output rating. Yesterday I dropped off brownies at both homes I worked with on
Hi Mike, Your washing machine generating RFI does not surprise me at all, and a likely source of that RFI is from the variable speed drive system your washer likely has (or whatever SMPS they are usi
Hi Tony, You said I might be off base here, but I don't see any downside to petitioning the FCC to rethink emissions limits to benefit hams. I would hate to see the harmful interference limitation re
Hi Kurt, You said "We already have specific emissions values, I just suggest lower.", but I don't believe there are radiated emission limits below 30 MHz, just conducted emission limits below 30 MHz
Honda came out with Inverter Generators in the 1998 to 1999 time frame. Just FYI, Don wd8dsb _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contestin
A few days ago I was out tracking down some power line noise that was causing interference at KB9RPG, and later in the day when looking at pictures I had taken of the suspect pole I happened to notic
Keith (K0gnw) sent me a nice message saying that it looks like Armor Rod is placed over the conductor cable where I'm seeing the "damaged cable". Therefore what I said looked like cut strands are pro
Today I tracked down RFI to a power pole that was causing problems at N4TZ. This was an interesting case as the pole was located in front of a house out in the country and the homeowner saw me lookin
Hi Ed, I did not bang on this pole, it was the cable company that the homeowner said was banging on the pole. In my video when I say you can hear the arcing you also hear a little slight banging (mor
Hi Mike, Points well taken, and thanks for your comments about the audible noise and possible root cause of it. Ive been told the power company already responded this morning and noticed the ground w