Hi, Do any of you know of other solar power systems that produce the characteristic SolarEdge RFI you hear tuning in USB mode to 14.198, 21.198, 21.398, etc? I ask because there have been addresses w
SolarEdge optimizers generate strong levels of RFI just from the power they get from the solar panels. There is no way to shut them off, other than disconnecting them, or covering them with something
I don't know about Lennox in particular, but I was getting RFI from a Carrier furnace. It had a variable speed motor. I could see the RFI change as the motor ramped up to speed. The first thing I did
I have a 2004 Carrier furnace with a variable speed motor. When I resumed ham radio in 2015, I found it did produce RFI. I could watch the spectrum change as the motor ramped up in speed. I installed
See my article in the May QST http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/May2019/Standke2a .pdf I give examples of SolarEdge RFI. Randy KQ6RS See my article in the March issue of CQ m
About 80% of the new solar installations in San Diego are SolarEdge. If there is any good news in this, SolarEdge has been good about fixing (the wire twisting with ferrites routine) addresses us ham
The safest option to avoid RFI is to avoid all switching circuitry on the roof. This incudes optimizers (which are DC to DC converters) and micro inverters (DC to 240 VAC converters). I have a Froniu
Fronius is a brand name and is the one I have. I believe that SMA and Sunnyboy may be two names for the same brand - but look that up to be sure because I am not positive. Are Fronius and SMA brand n
I would be interested in the technical reasons how a solar panel can make RFI. Is there some switching circuitry connected to it? In other words, are there more than just solar cells in the assembly
Hi Ed, I would be interested in anything you discover regarding the interaction between solar panels and SolarEdge optimizers (DC to DC converters). I just picked up a SolarEdge optimizer, model P320
Wouldn't the noise from semiconductors tend to be random (broadband white noise) in nature? Much like the added noise from an amplifier due to its noise figure value? The RFI I have experienced from
What is the noise voltage level (or power level into a load) from a solar cell? For example, if it is -120 dBm and the signals coupled from the wiring of a solar array to your antenna is 50dB lower,
73, Randy KQ6RS I use a Tecsun PL-880 for DFing QRN. It has good sensitivity, selectivity and directionality. I also have an outboard tunable loop stick antenna inductively coupled to it. It improves
A link of the video of me using the loop is here: https://www.youtube.com/watch?v=xLKq0hgKn9o It was made by W6HDG Randy KQ6RS From: David Eckhardt <davearea51a@gmail.com> Sent: Friday, July 12, 2019
I also have a few houses for SolarEdge to fix and the excuse of "ferrites are backordered" is getting old. About eight months old. There has also been some mention that the solar panels make RFI. I c
Hi Tony, The SolarEdge optimizer I tested was Model P320. If other members of this list want to see the spectrum plot I measured, feel free to send me an email and I will send it to you (the list bou
The SolarEdge response time is more like 10 months. They just fixed an installation last week that I complained about in December 2018. The excuse they kept repeating is no ferrite chokes are availab
If you still have RFI after SolarEdge has been out to do their wire twisting and ferrite installation procedure, I suspect they may have missed one or more of the optimizers (DC to DC converters). Ev
SolarEdge optimizers can make RFI covering most of the 20 meter band even when they are idling with the main inverter off, or before they are connected in a new system. The voltage on the input side
Another inverter brand I found to be absolutely quiet is Fronius (also German made). That is the brand of inverter I have for the solar power system I have at my house. Just after I had it installed,