The 78F-73MQS5 from Taiwan Rapidtek Inc. is a Between Series RF Adapter with Contact Resistance 2 to 6 mOhms, Frequency DC to 10 GHz, Insertion Loss 0.3 dB, Insulation Resistance 5000 MOhms, Return Loss 20 dB. More details for 78F-73MQS5 can be seen below.