Resistor Networks DC-18G, 50W coaxial attenuator technical specifications: Nominal impedance 50 Ω Frequency range DC to 18 GHz VSWR 1.45 Rated power 50W Temperature range: -55°C to +125°C Attenuation 10, 20, 30, 40dB optional, 10dB-40dB±1.8dB