The N9938A from Keysight Technologies is a RF Spectrum Analyzer with Frequency 5 kHz to 26.5 GHz, Resolution Bandwidth 5 MHz, DANL -155 dBm, Third Order Intercept(TOI) +15 dBm, Phase Noise -111 dBc/Hz. Tags: Analyzer with Screen. More details for N9938A can be seen below.