Additional Features: Frequency range: 9 kHz to 3 GHz Resolution bandwidths: 200 Hz to 1 MHz Dynamic range: >137 dB Noise level: typ. -120 dBm (300 Hz RBW) Level uncertainty: <1.5 dB Frequency counter with 1 Hz resolution Maximum inout level 33 dBm USB interface The R&S FS300 is a highly accurate spectrum analyzer with a frequency range of 9 kHz to 3 GHz. The FS300 is a versatile spectrum analyzer for comprehensive measurements in laboratory, service and production.