Sorry, I meant to also say that you can see that the trace noise is a bit more jaggy below about 3MHz and this is probably to be expected as the noise source ENR is starting to fall and the noise floor of the analyser is degrading by at least 1dB at the lower end of the frequency range. This is causing the gain and noise figure traces to look more jaggy. Averaging would hide this to some degree but I left it running without averaging to demonstrate this. So the system is struggling a bit more here.
