Hewlett Packard 4396B, spectrum network analyzer, 100kHz-1.8GHz, opt 010
with impredance analyzer, illustrative photo
Network: 100kHz-1.8GHz, 1mHz resolution, -60 to + 20dBm output; spectrum: 2Hz-1.8GHz, RBW 1Hz-3MHz; Impedance (need to purchase a 43961A kit): 100kHz-1.8GHz.