Gigatronics 6100/2-8; 2.0 to 8.4GHz frequency range, 1mHz frequency resolution, +10dBm to -120dBm leveled output range, 0.1db output resolution, am fm and pulse modulation, less than -75dbc ssb phase noise (1Hz noise bandwidth, 10kHz offset, at all power levels), gpib.
Gigatronics 6100