A worryingly straightforward event, but brilliant event (by Sportiva Events ) to time this weekend. Was a bit concerned as the new EU22 (higher power) impinj speedway R420 was switching antenna significantly slower than I expected. However, needn't have worried, when used correctly. The setup consisted of two 4 port impinj readers, one EU21 spec (2W), one EU22 spec (4W). Each was running three antennas. The EU21 with is faster antenna switching was driving three linear mat antennas, the EU22 with is greater power was driving three side, circular polarized antennas. We were much more careful in the setup, leaving a good gap between the mats and the side antennas, which proved to be wise as we no issues with the side antennas interfering with the mats as I had on a previous race. Between them, we didn't miss a runner (there was over 200). However, which reader read what was quite different for adults and children. See below for the results. I am guessing the height difference bet