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March 2024

CMCC Test Rig, used in ARRL Labs?!

Hey all! Check out this video from the ARRL, showing a little in-house Common Mode Current Choke building competition they posted a couple months ago: They have people of various experience levels, from not-a-ham(-yet) to veteran Amateur Extra, build different designs of common mode current chokes. Then (starting at about 5:45 into the video) they hook up their chokes to… Read More »CMCC Test Rig, used in ARRL Labs?!

Power handling of BCI Filter for VHF/UHF

I just launched the Halibut Electronics Broadcast Interference (BCI) Filter for VHF/UHF. It’s designed to prevent strong AM broadcast signals from blowing out the front-end of wide band receivers that have little or no pre-selection, such as inexpensive SDRs. There are many BCI filters availble, but all the ones I could find were designed for HF, and performed very poorly… Read More »Power handling of BCI Filter for VHF/UHF