The RSA3045 from RIGOL Technologies is a RF Spectrum Analyzer with Frequency 9 kHz to 4.5 GHz, Resolution Bandwidth 2.51 KHz to 40 MHz, Real Time Bandwidth Up to 40 MHz, Video Bandwidth 1 Hz to 10 MHz, DANL -158 to -120 dBm. Tags: Analyzer with Screen. More details for RSA3045 can be seen below.