quadrifilar helix

A "Magic Band" Antenna and More Keyer Progress

My six-meter quadrifilar helix antenna

Well, I finally went and did it. I built the 6-meter quadrifilar helix I've been talking about for years. Okay, it's not quite done, I'm waiting for a decent pair of wire strippers to arrive, but a week ago I took a four-inch PVC pipe, some 3/8 inch dowels, some Romex, and adhesive and fabricated a QFH antenna. I used a short Python program I wrote to determine the dimensions and, well, I did it wrong. The short wire in what I built should be the long wire at the operating frequency, so the whole thing is too long for the 52 MHz design frequency.

What I've Been Up To Lately

It's been a while since I've put anything here, but I've been busy the whole time.

I received a Peaberry SDR V2.0 kit as a gift, and I've been assembling it. I've gotten to the point where the entire receiver is built and works, and I'm working on the transmitter. I'm building the 20, 30, 40, and 60 meter version of it, if anyone cares. At some point, I'll have to find a nice Linux SDR application I can use it with. Up to now, I've just be using the recommended Windows application because it's recommended. I want to control the uncertainties in any project I do.

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