The 1801C VHF/UHF Sweep / Signal Generator provides features and options suited for the manufacturer of TV and CATV equipment and for the installers and operators of CATV systems. The frequency range of the unit is 1 to 1000MHz. The ultra-flat (?0.25 dB, 1 to 1000MHz) 75-ohm output system is calibrated from +57 to -33 dBmV. A three position front-panel level switch permits the output level to be increased or decreased by an identical fixed amount (internally adjustable to provide changes ranging from ?0.05 to ?0.5