I have a 7kw SMA Sunny Boy inverter and I can say that I have experienced no noticeable interference. My inverter is in the barn about 125' from the house, and about 125' from my antenna. I also have tested my portable/mobile HF rig parked 20' away on HF SSB with no noise. Also, I regularly work Sats. mostly FM, but I have started SSB, typically 15'-25' away. It is not an inexpensive inverter, but I have been extremely pleased with it from a performance standpoint, and an RF noise standpoint.
R.J. WY7AA
On Sun, Feb 10, 2019 at 8:23 PM skristof@etczone.com wrote:
I concur. Unfortunately, my knowledge comes from personal experience. I did not do my homework before getting my solar panels. Each of the 14 panels has its optimizer. I used to use dipoles in my attic. Imagine how that sounded the first time I turned on my radios once the solar panels were up and running.
I quit the attic dipoles and put an end fed wire out the back of my 2nd story window. That was better but not much. I bought a Timewave ANC-4 Noise Canceller. That actually does reduce the noise somewhat. 40 m is now usable during the day. But the box only works on HF.
The noise level is also a problem on VHF. I used to download satellite telemetry during daytime passes, but I can't really do that anymore. I can do some satellite work from the house at night. Otherwise, if I have had a satellite QSO with any of you in the last year, it was with a handheld and an Arrow from my backyard, preferably pointing the Arrow away from the house.
I did have toroids from Palomar Engineers installed on the wiring of the panels after the fact, but they didn't help much. Maybe a little.
I do not regret going solar, but I wish I'd done more research first. Learn from my mistakes.
Steve AI9IN
On 2019-02-10 19:52, Robert Bruninga wrote:
The Solar Inverters that are terrible are the OPTIMIZERS. Little RF generators on EVERY panel all over the roof.
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