In this paper, we present empirical packet error curves for DECT NR+ across different Signal to Interference plus Noise Ratio (SINR) levels. The curves were fitted to measurements obtained from a physical testbed consisting of two nRF9151 DK and an Ettus USRP B210 acting as an Additive Gaussian White Noise (AGWN) source. Our results provide a foundation for Packet Error Rate (PER) models in system-level DECT NR+ simulations, though our conclusions are limited by their reliance on a single hardware platform. Our findings deviate from both theoretical predictions and what other measurements would suggest. Our findings highlight the importance of the selection of hardware for real-world experiments for the evaluation of DECT NR+.