The ETST9K400M-200 from Etrontimes Technology is a RF Spectrum Analyzer with Frequency 9 kHz to 400 MHz, Resolution Bandwidth 0.1 to 10 MHz, Analysis Bandwidth 50 MHz, Video Bandwidth 0.1 to 10 MHz, DANL -50 to -20 dBm/Hz. Tags: Analyzer with Screen. More details for ETST9K400M-200 can be seen below.