I have used a Jackery to power my FT-817 and it worked fine and no RFI.? Last Field Day it was too hot to spend an extended time outside so I ran Class 1E and ran a 100 watt transceiver at reduced power directly from a Bioenno battery.? After the battery ran down I plugged my AC supply into a Jackery and powered the rig from that and had no RFI.? To stay totally emergency power I ran a light on another, smaller Jackery.? Again, no RFI.
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On the Waters and Stanton YouTube channel, Peter, G3OJV, has posted a few videos using a Jackery to power a QRP rig.
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Of course, not sure if every brand of "generator" will be RFI free or not.
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