Possibly, but EU has also take a tact that it also regulates immunity, which is not as good a regulatory paradigm as it might appear to be. In some countries, they decided that if they have immunity
Actually, yes, they are changing their designs. These field retrofits are expensive. The Lab's W1VLF was on the list to get his own home system upgraded and they replaced the inverter, the optimizers
Actually, the FCC really hasn't given up on HF. What I have said is that there are no radiated emissions limits for unintentional emitters below 30 MHz. (There are conducted limits onto the AC mains.
A solar system that uses >9 kHz would have to meet radiated emissions limits above 30 MHz and conducted limits onto the ac mains below 30 MHz. ________________________________ From: RFI <rfi-bounces@
JIm, We are in contact with Solar Edge and Tesla, the two major players. If you can summarize what you previously provided, we can make sure it gets into the hands of the engineers. Ed Thanks for you
And just what would you have lawyers do? Solar Edge is already handing the problems and replacing systems. Tesla is a new player and that initial letter was written by their lawyers. You saw the resu
Two models that were tested in the ARRL Lab were 58 dB over the limits. (They seemed to be the same design, rebranded.) There is no doubt that these would devastate the AM broadcast band. If you are
Under FCC rules, the device must meet radiated emissions limits about 30 MHz. They are high enough that if a neighbor's device just meets the rules, you could typically see about an S7 signal or nois
The FCC has never determined a level that constitutes "harmful interference." For Amateur Radio, the term is defined essentially as the repeated disruption of a licensed radio service. If the FCC wer
We don't get to set any limits; the FCC does, and they would probably set limits at the median value of man-made noise in all residential environments -- about S7 on 10 MHz, for example. "the worded
How is the noise on 6 meters? The device does not have radiated emissions limits below 30 MHz, but at 30.001 MHz, it must pass radiated tests. If it is noisy on 6 meters, I'd like to take a look at i
Unfortunately, they didn't list the manufacturer or model. If the manufacturer is selling 120v models in US big-box stores, I would get a couple of them to see if they are radiating about Part 15 lim
No, and about the time that I was set to revisit that, Chris Imlay, our DC attorney, left and we brought on David Sidall. I need to revisit this with him to see if we can freshen the case and continu
Most of those switchers do drift with temperature. They also show little jumps in frequency with voltage changes, so that, too, can be diagnostic. The real question is not usually the one hams always
This is a key point, Mike. Many noise sources that might be very strong when you are right on top of them are not heard at all at the amateur station. This is why the signature method is the only rea
I am fluent in typo! Input! RFI Services Michael Martin 240-508-3760 <http://rfiservices.com>rfiservices.com<http://rfiservices.com> Thanks Ed your in foot is extremely valuable RFI Services Michael
There is also no certainty that the horizontal wires are equally balanced, so it is not necessariy going to cancel, imbalances on what else is connected to those wires on each side of the source, imb
There are actually at least two different "near field" regions. The first is the reactive near-field region, where the electric and magnetic fields can decay rapidly, are not necessarily in the far-f
This cannot be emphasized enough -- doing any repairs to neighbors' equipment can carry a risk of liability. This is especially true for any device where malfunction such as this may cause a fire. A