I’m entering the Verulam Amateur Radio Club aerial contest 2020. I’ve built a Delta loop with bits stored at the back of the house.

Items used are plastic electrical conduit and drain pipe, coax cable and wire.  Wire length is approx 6 metres, the conduit is 2 metres long. The matching coax is approx 1 metre 75 ohms (converts feed impedance (100 ohms) to 50 ohms.

The support mast is 40 mm sink pipe. The measured match is 1: 1.7 VSWR at 50 MHz, falling to 1: 1 at 51 MHz.

The picture below shows the matching coax tube and cover. Tests are underway to see how well it works.