Model 50PA-1019-XX is a 19 inch rack mount attenuator assembly containing 50 Ohm solid-state step attenuators. The number of attenuators can be selected from 1 to 8 attenuators. The attenuators have an attenuation range of 0 to 63dB by 1dB steps and operate at 100 MHz to 40GHz GHz. It is available with SMA female connectors. This attenuator assembly can be remotely controlled via an Ethernet connection or a serial connection.   https://www.jfwindustries.com