Meteor radar observations of mesospheric winds play a vital role in advancing our understanding of middle-atmosphere dynamics, including tides, planetary and gravity waves, and their contributions to wave-mean flow interactions and vertical coupling between atmospheric layers. In recent years, meteor radar networks across different continents have been increasingly coordinated to investigate the horizontal scales of planetary-scale structures. In particular, a series of studies have employed dual-station spectral analyses at different longitudes but similar latitudes, leveraging signal coherence between stations to determine the zonal wavelengths of various oscillations. This methodology has yielded valuable insights into the interactions among different atmospheric waves, their seasonal variability, and their responses to sudden stratospheric warmings. Building upon this foundation, our study extends these approaches to examine Mixed Rossby–Gravity Waves, focusing especially on oscillations beyond the quasi-2-day waves, such as the 28-hour oscillation, and their relationship to the quasi-biennial oscillation.