The 1067 Sweep Generator operates in the frequency range from 1 to 400MHz in one band. Output range from +10 to -60 dBm. Flatness of ?0.25 dB. Spurious content of 30 dBc above 10MHz. Impedance of 75 ohms. Sweep rate is continuously variable from 0.5Hz to 60Hz. Provision for up to 6 crystal controlled plug-in birdy bypass marker modules