Help diagnosing interference issues
I'm having quite a bit of trouble diagnosing interference issues on my KiwiSDR setup.
I'm not sure if this is intermod from a close-by AM broadcast station, or something in my house interfering.
As of today, I'm using an active MiniWhip antenna that I purchased as a kit on eBay and fabricated the rest myself, making sure to use lots of ferrite toroids and a clean 12V power supply. Before that, I was temporarily running on a 40M dipole and an ATX Walkabout (MFJ 1899T) extendable vertical antenna intended for 80M to 4M, depending on the positon of the flying lead.
In all cases, I get these horrible vertical bars across the entire 0-30 MHz range, and noise is pretty lit up across the whole thing, but really hot around MW broadcast and a few other spots.
If I turn the power supply off, it goes pretty much dark. If I unplug the antenna, it goes completely dark. Therefore I'm confident that it's something radiated, being picked up by the antenna (and any antenna I've used, for that matter).
First blip is power removed. Second blip is antenna removed.