The SMA-KYK-HS2 from Talent Microwave Inc is a In Series RF Adapter with Frequency DC to 18 GHz, Insertion Loss 0.21 dB, Insulation Resistance 5000 MOhms, Temperature -55 to 165 Degree C, Voltage Rating 1000 V. More details for SMA-KYK-HS2 can be seen below.