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16UN19, HF "Long wire" Wideband antenna, is perfect for the garden or...

Impedance transformer (1:6 ratio) for OTURA3 antenna.

Impedance transformer (1:3 ratio) for OTURA3 antenna.

Impedance transformer (1:4 ratio) for OTURA3 antenna.
27 MHz 1/4 wave vertical antenna delivered with 3 wire radians. Very robust tubes with large diameters and thicknesses (2 mm), wide bandwidth, very low SWR. Connection to the 50 ohm coaxial cable directly by SO-239 (no balun or other adaptation system). On perfect ground the gain reaches 5.15 dBi and the radiation lobes favor DX.