What a GUN antenna! When I do DX to North America they are very surprised that I answer them, when they are in minimal working conditions (100 W. and a wire dipole).
Compared to an X-50 it has nothing to do
I've been surprised by this antenna (for good), very low noise, very low ROE less than 1.3: 1. Use in 40 m and easy assembly. With 9 W. I have done LU, several EA8, etc. I have made a good change with this antenna, it is installed at 9 m.
After trying many verticals, today I work with what for me is the best vertical for 11 meters. The performance far exceeds 5/8. Best of all, the absence of QRM.
We use a DL-20 on the Radio Club EA4RCH in some international contest. With it We hear very low signals and with much less noise than the Yagi. It's great, very easy to assemble.
A great antenna in RX and TX. The QRM noise has dropped me to signal 4-5 and with a Bazooka dipole I have 8-9. I give an outstanding, thank you very much now I enjoy the 40 meters again.
Just next day when the antenna up I worked 271DA/0 and my near my QTH using a 4 element Yagi can?t no work them. It?s a Big Gun antenna.
A very good change, this antenna is a luxury.