Agilent/HP 8449B 1GHz to 26.5GHz 26dB +7dBm Pre-AmplifierSolid Stat - Output Flatness 3.5...
Frequency Range 10 MHz ~ 3 GHz Gain 25 dB Other Output Imp - 50 ohm
8491B Coaxial Fixed Attenuator, DC to 18 GHz