The Series 156 from Narda-MITEQ is a RF Switch with Frequency DC to 26.5 GHz, Insertion Loss 0.2 to 0.8 dB, Isolation 45 to 80 dB, Supply Voltage 28 V, Actuator Voltage 28 V. Tags: Module with Connectors, Electro-Mechanical. More details for Series 156 can be seen below.