The 31_SMA-TNC-50-1/1--_UE from HUBER+SUHNER is a Between Series RF Adapter with Return Loss 17.7 to 26.4 dB, Frequency DC to 11 GHz, Mating Cycles 500 Cycles, Temperature -65 to 165 Degree C. More details for 31_SMA-TNC-50-1/1--_UE can be seen below.