AMP contributed to the development of a significantly more challenging Q-band EPR cryoprobe! Check this paper in JMR. In this work we used a version of our modified probehead to measure a tiny amount of Te donors implanted very close to the silicon surface. In this work in Nature Communications our prototype probehead was used to assign iron-sulphur clusters to the structure of Photosynthetic Complex I revealing its true potential to solve problems in biochemistry. In this paper in JMR we describe our modified probe and show the speed-up of typical EPR experiments. One of our modified probes were used to measure very weak EPR signals of bismuth ions implanted into silicon.