The 8565EC from Keysight Technologies is a RF Spectrum Analyzer with Frequency 9 kHz to 50.0 GHz, Resolution Bandwidth 1 Hz to 1 MHz, DANL -145 dBm, Third Order Intercept(TOI) +11 dBm, Phase Noise -113 dBc/Hz. Tags: Analyzer with Screen. More details for 8565EC can be seen below.