DIY $4 QRP Multiband Endfed Half wave ultra simple + lightweight 40/20/10 (30/17/12)

Hello Operators

Today’s topic is an end fed half wave antennas. This one is an extremely cost-effective, lightweight and easy to build QRP version from DL1DN of QRP Lifestyle on YouTube. You all know me, so you know I wouldn’t waste your time. This operator explains it so well and makes it look so easy, I could get interested in building these antennas myself.

Back in the day, it was quite normal to share videos from other channels on my blog. Unfortunately with channels becoming more competitive, sharing just wasn’t that fun anymore. These days I’m happy to find these new smaller channels popping up, doing innovative work. They aren’t doing it for views, they’re doing it because they’re passionate about ham radio. I’m stoked and hope you are too.

73
Julian oh8stn
YouTube http://www.youtube.com/c/oh8stn
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4 Comments

    • Yeah agreed. I don’t know if I would use the SMA connector, but the style of the build is pretty nice. We could just as easily substitute the core with a slightly bigger one and did the same or similar thing with the BNC connector.

    • I took a look at this video and realized I saw it before. It’s an interesting design, it certainly small but there’s a couple of problems with it. First late there’s no feed line. So if you’re outside it’s excellent you connect the antenna directly to the radio. If you’re in a tent, car, or some other type of structure oh, that antenna won’t work. The other thing I didn’t like about it was the fiddly bits. It’s incredibly difficult to solder the hot end of the toroid into the center conductor of that BNC connector. Perhaps someone with younger eyes can do it. Finally the traps even though they are so small, they get caught on tree limbs. Yeah when you shared that in our other group, I didn’t realize I had seen it before. With all that said, it’s an excellent template to make something more forgiving at the expense of being a little less portable. One thing I might do is use the traps for a trap dipole. The Trap design was absolutely brilliant!

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