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: hamradio
Japan Radio NRD-545 Table Top Radio
As the twentieth century drew to a close, I bought my last great premium receiver from the era – the Japan Radio NRD-545 table top. What a charm. Read more
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
AOR AR7030 Table Top Receiver
My AOR AR7030 table top receiver was the best listener’s radio that I have ever owned. And the most controversial, as well. Read more
Remembering Table Top Radios
During the late 1990’s, reading Passport to World Band Radio got me excited about premium table top radios. So, I took the plunge. Read more
Joining the DMR World – First Purchase
So folks, I am joining the DMR world with my purchase of a cheap handheld and hotspot. I think this will open up a world of addressable possibilities! 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