The Model 766-20 embarks as a 20-dB bidirectional coaxial attenuator operating from DC to 4 GHz that can handle full RF input power at either connector without damage. Attenuation deviation is ±0.25 dB to 3 GHz and ±0.5 dB to 4 GHz. It handles 20W average and 1 kW peak input power and maintains a VSWR of less than 1.15:1.Additionally, the unit measures 3.07” x 1.52” and weighs 5.6 oz. NARDA MICROWAVE - EAST, Hauppauge, NY. (631) 231-1700.