The 50DR-046 from JFW Industries is a Dual Rotary Attenuator that operates from DC to 2500 MHz. This manual step attenuator has an attenuation range from 0 to 50 dB which can be adjusted in 1 dB steps using a small knob and 10 dB steps using the larger knob. It can handle up to 2 watts of power and is available with BNC, N or SMA connectors. The attenuator has four mounting holes in the front plate to allow for panel mounting.