The R&S FSH3 from Rohde & Schwarz is a RF Spectrum Analyzer with Frequency DC to 3 GHz, Resolution Bandwidth 100 Hz to 1 MHz, Video Bandwidth 10 Hz to 1 MHz, DANL -114 dBm, Third Order Intercept(TOI) 13 dBm. Tags: Analyzer with Screen. More details for R&S FSH3 can be seen below.