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The use of concurrent transmissions allows protocols to achieve high reliable, ultra-low latency communication in homogeneous wireless sensor networks. However, applications for wireless sensor networks must often operate over heterogeneous nodes. In this work, we provide a first step towards enabling concurrent transmissions in heterogeneous networks. We present a methodology to implement the Glossy communication protocol on a number of different hardware platforms. We further compare the performance of Glossy on two exemplary platforms -- the Tmote Sky and the WiSMote. We show that even small differences in the underlying hardware can influence the performance of Glossy significantly.