If a picture is worth a thousand words, you might find my RFI fighting videos useful. When you can actually see spatial filtering work, you get motivated. Read more
Tag: RFI
Radio Accessory Power Distribution Box
Another successful 3D printed gadget for the radio room. This time, I built an accessory power distribution box for a couple of dollars. Read more
Removing Switched Mode Power Supplies from Shack
Removing switched mode power supplies, and their attendant RFI, can be quite simple. Let’s take a look at my cheep and cheerful approach. Read more
All Good Things – QRM Eliminator Wrap-up
If you set up noise antennas properly, any of these devices can work for you. That’s the essence of my QRM Eliminator Wrap-up. Read more
Tackle Multiple RFI Sources with SIFT
Can you remove multiple RFI sources at the same time with spatial filtering? Perhaps, but it’s not easy. Read more
Digital Versus Analog SIFT
Which reduces wideband RFI better: digital versus analog SIFT. Take a look at my experiment and judge for yourself. Read more
Analog Noise Reducers on the Workbench
Before doing serious work with these four analog noise reducers, I thought I should get to know them properly with some lab tests. Read more
Worst Case Wideband RFI Reduction
All 4 of my test units attacked worst case wideband RFI successfully, but the performance of the cheap X-Phase really blew me away! Read more
RFI Cable Cleanup with TinySA
TinySA is a perfect tool for RFI cable cleanup. Make sure your supposedly shielded coaxial cables running between antennas and radio receivers are actually shielded.
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Analog Noise Reduction Showdown
Dreams come true. I have been able to assemble four leading analog noise reduction products for comparison, real world and lab testing. Read more