Additional Features: Frequency range: 9 kHz to 21.2 GHz 1 kHz resolution bandwidth -115 dBm to +30 dBm amplitude measurement The Anritsu MS2665C has built-in functions for evaluation of radio equipment (frequency counter, C/N, adjacent channel power, occupied frequency bandwidth, burst average power and template decision function). Dual trace for simultaneous display of frequency spectrum and time domain. The Anritsu MS2665C is an excellent alternative to HP 8593E and it includes RS-232, GPIB interfaces and memory card reader.