Stober, J., Kircher, M., Leuterer, F., Monaco, F., Münich, M., Schubert, M., Wagner, D., Bock, A., Burckhart, A., Geiger, B., Herrmann, A., Rittich, D., Zohm, H., Gantenbein, G., Jelonnek, J., Thumm, M., Meier, A., Scherer, T., Strauss, D., Kasparek, W., Lechte, C., Plaum, B., Zach, A., Litvak, A. G., Denisov, G. G., Chirkov, A., Malygin, V., Popov, L. G., Nichiporenko, V. O., Myasnikov, V. E., Tai, E. M., Solyanova, E. A., Usachev, S., & ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society (2018). The 8 MW dual-frequency ECRH system of ASDEX Upgrade. Talk presented at 20th Joint Workshop on Electron Cyclotron Emission (ECE) and Electron Cyclotron Resonance Heating (ECRH) (EC-20). Greifswald. 2018-05-14 - 2018-05-17.