Can I make Noise Figure Measurements below 10 MHz with the ESA-E Series Spectrum Analyzer?

Yes, you can make noise figure measurements with the ESA-E Series Spectrum Analyzer below 10 MHz, however, no instrument specifications are provided. Keysight does not offer Noise Sources below 10 MHz. There are other vendors who offer noise sources below 10 MHz. They include Noisewave and Micronetics.