HyEndFed SWL antenna 0,3 - 30 MHz

This is more than just a normal 1:9 Unun.
Tests show SWR is perfect across the entire HF band, transformation is perfectly flat, measured with 450 ohm.
With this antenna it is also possible to transmit with 25 Watt power, but you do need an antenna tuner.
The standard length of the wire is 22 meter.

Materials

Stainless steel,
Enclosure, ABS, IP65
Silver Plated SO239 socket.
Hard copper Antenna litze, breaking limit 40kg
End Insulator: Polycarbonate UV resistant.