Phase noise is an important performance characteristic, yet there remains confusion in specifications of a radar systems concerning phase noise characteristics and its relationship to clutter rejection. The operator is primarily concerned with the latter. The radar purist is concerned with the former. This paper draws upon our experience with the National Weather Service, Evansville radar program, the associated analyses and testing performed to achieve active clutter suppression greater than 65 dB. From this analysis, misconceptions concerning phase noise and clutter suppression are identified and mitigated. Finally a mathematical model to estimate the clutter suppression available to a radar system is presented and evaluated.