Hp / Agilent 8616A The 8616A Signal Generator provides

The 8616A Signal Generator provides stable, accurate signals from 1.8 to 4.5GMHz with selectable functions including CW, leveled output, square-wave modulation, and external AM, FM, and pulse modulation. For requiring applications, modulation can be accomplished simultaneously with or without leveling. RF output power of +10 dBm to -127 dBm into a 50-ohm load is available plus a second uncalibrated output (approx. -3 dBm) is provided on front-panel. Both frequency and attenuation are set on direct-reading digital dials offering simple setup and operator convenience.