A3dB Mono-directional broadband thruline attenuator working from DC to 4GHz with +-0.8dB error. Mono Directional Continuous power rating is 100Watts (forward) de-rating to 10Watts (reverse). Total frequency range and vswr: 1:1.2, DC-4GHz. Connectors: “N”(f) input, “N”(m) output. Size: 102mm (L) x 76mm sq. Weight: 500gm. Be sure to check your connection genders. Adapters & short cable lengths can be ordered as extras.