The 50P-1853-SMA from JFW Industries is a RF Variable Attenuator with Frequency 200 MHz to 6 GHz, Attenuation Range 63 dB, Attenuation Step 1 dB, Power 0.1 W, P1dB 20 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 50P-1853-SMA can be seen below.