The 603L Broadband Power Amplifier is an ultra wideband, class A, solid state amplifier that is capable of delivering over 3 watts of power with a flat frequency response from 800kHz to 1GHz. It will accept CW, AM, FM, SSB, pulse, wideband sweep and other complex modulations. Gain is 40 dB nominal. Gain variation is Tone1.5 dB maximum. Input/Output impedance is 50-ohms.