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Showing posts with the label RFI

Noise Sources in the Shack

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Efforts to hear weak signals are hampered by noise. Most often, noise outside of the home cannot be mitigated. However, noise on your own property can often be eliminated. The purpose of this post is to document my Noisy Fox Hunting efforts. 04/4/2025 Broadband noise on 10 M For some time, I've been seeing a band of noise wandering through my spectrum display on 10 M. I finally took time to track it down. My shack has switched outlets, one on the north and one one the south. These are controlled by voice commands. This is cool because I can say, "Hey, Google, turn radio shack off." The outlets are on the north and south wall. The north wall is where all the ham gear is. When I turn the north side off, everything goes down except the radio and the computer. When I turned the north side off, the noise you see in the display went away. I traced it to my main ASUS display. It turns out that, when the screen is active, the noise is present. If the screen goes dark, via a power...