First Copper Pipe Dipole

In June of 2025, In order to increase antenna bandwidth considerably over the wire dipole, I switched to some copper piping that I bought from the hardware store, cut, soldered wires onto, and painted.

Oldest photo of my first 6-meter copper pipe dipole

This one also featured a 1:1 current balun with an old cannabis jar enclosure.

6-meter feed point balun

Because of the low feed point impedance, I also tried a 1:4 current balun, which didn't work at all for this purpose.

1:4 current balun

After discussing with DD8SF, I tried a twin coax feed, which almost worked!

Twin coax feed made of some Amazon RF coax wrapped around an FT240-43 core

NanoVNA: SWR of 1.147 @ 49.4 MHz, 45.15+j4.338Ω

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