The 50FHAO-XXX-100-4 from JFW Industries are Fixed Attenuators that operate from DC to 4 GHz. They are available in 20, 30, 40, or 50 dB attenuation values with an accuracy of ±3 dB. These attenuators can handle an average input power of 100 W and a peak input power of 1000 W. They are available in Aluminum alloy modules that measure 6.13 (L) x 3.50 (Dia.) inches and have N-type or 4.3/10 connectors with a cylindrical heatsink.