I believe that TX site is the shortwave transmitter site of Radio Netherlands Worldwide in East Flevoland, The Netherlands. With a kilowatt plus into that curtain array with 22 dB of honest gain signals are BIG, I worked Peter,PA8A, a few years ago on 20m during a special event operation commemorating the liberation of Holland during WW2. He was at the SW site and the signals were absolutely incredible, I usually have no problem with signals from Holland anyway but this time the problem was too much signal. When he was beaming to south Asia I could turn the beam away from him and hear an echo caused by hearing him direct off the back of the beam as well as the time delayed signal as it traveled around the world and even the round the world signal was still quite strong. The closest I have ever come to something this cool was loading a 160 foot AM broadcast tower with 120 radials on 80m and 160m. that was fun but was omnidirectional.