The QSP4T80R-0.5-18 from Qualink Microwave is a RF Switch with Frequency 500 MHz to 18 GHz, Insertion Loss 3.3 dB, Isolation 80 dB, Power 30 dBm, Power 1 W. Tags: Module with Connectors, Solid State. More details for QSP4T80R-0.5-18 can be seen below.