Collm meteor radar (MR) winds have been analyzed with respect to quasi 2-day wave (QTDW) amplitudes and phases. Two methods have been considered, one of them taking into account the varying period and the other one assuming a fixed period of 48 h. While the use of a fixed period leads to a slight underestimation of amplitudes, the seasonal cycle, the inter-annual variability, and the distribution of amplitude and phase diffferences between the zonal and meridional horizontal component are similar for both methods. One may conclude that the use of a fixed period is justified for analyzing QTDW amplitudes and phases as long as only qualitative results are required.