Interfering with Ham Radio

The Kilowatt Challenge

The Kilowatt Challenge

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Nov 20, 2019
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Hi guys,
Any fellow Amateur Radio operators out there?
I'm buying my big inverter in a couple of weeks and I'm just accepting the fact that it's going to generate noise on the HF bands.
I'm wondering if anybody has panels and an inverter and is NOT receiving RFI from it? If so which brand and have you earned everything.
Cheers all and 73`s for those who know what means :)
Darren
 
How big of an inverter are you going to buy? What is the distance from your shack to your powerwall/electronics? Victron MPPTs are supposedly rf quiet so I wonder if their inverters are as well. One of these days I'll test for my general and get on the HF bands. But right now I can't answer those questions. My cheap AIMS 1500w inverter def makes noise on vhf and even interferes with bluetooth if I get too close to it (<3 feet). I am also interested to see what input other people have!

73's
Nate
 
You might also be able to fit extra electro & HF capacitors to the DC input & AC output (suitably rated!) - maybe a heavy duty AC filter on the output too?

A steel box or mesh "faraday cage" might also help?
 
Mmm, that is a great question.
As my panels are within 10 feet of my antenna, and the solar shed (with everything-inverter included) is only about 30 feet away, you would think I would have personal experience to offer. Problem is, while doing all my solar stuff, I also made myself a new antenna. I changed from horizontal off center fed, to a vertical (designed after M0MZX Callum of DX-Commander). Since vertical typically has more noise than horizontal, I really don't know,
I may try something this afternoon, as I plan to shut the solar system down for a few minutes to run some wires. I will try to check out 40 meter band to see if I get any excess noise with the inverter and system up. I will let you know.
 
Okay, sorry I did not get back, I have been slammed with grounding demons.
I did a very subjective test, and say no difference in QRM with the solar system going or not.
Take if for what it is worth, not a lot.
 
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