It's time for.... the 2024 10m Challenge. (Part 1)

[MM0FMF]

@VA3RR

of a delta loop

Here’s the info on the one I made for activator use. Andrew @VK1DA thinks my wires are a little long and he’s probably right. But mine covers 28.0 to 28.6 with an OK SWR. YMMV

Delta loop antenna on higher HF bands

So I finally got round to doing the maths and making a loop for 10m. A bit of Pythagoras and a bit of trig and I had some lengths. I used 1005/F(mhz) to get the length of the loop in feet. Then multiply by 12 and 2.54 to get it into sensible units. This version has an apex at the top and is fed part way up one side. Full dimensions to follow. It needs a 1/4 wave transformer made from 75ohm coax to get the match to 50ohms. I had some 3m lengths of quality satellite coax with N and F connectors s…