Example of close in phase noise

Folks

I had a question recently about the close-in phase noise around the zero IF, where many FCD and Softrock users will see a peak in the middle of passband. Although you can correct for DC offset, phase noise is by definition unpredictable but it can be characterised. Here are some pics of the phase noise, firstly in a full 96kHz span and secondly zoomed in to a 4kHz span.

Howard