The USB-1SP4T-183 from Mini Circuits is a RF Switch with Frequency 100 MHz to 18 GHz, Insertion Loss 2.5 to 6 dB, Isolation 50 to 70 dB, P1dB 27 dBm, P1dB 0.5 W. Tags: Module with Connectors, Solid State. More details for USB-1SP4T-183 can be seen below.