The newly installed medium frequency radar (MFR) at Platteville provides unique opportunities to assess latitudinal effects in both the ionosphere and mesosphere-lower thermosphere (MLT) by comparisons with the long-established MFR at Saskatoon. The influence of the D region winter anomaly is evident in both ionospheres, and descending sporadic layers (110--90 km) are identified, especially at 40¿N, for the first time for MF radar systems. Preliminary comparisons with the wind measurements are made, and the processes are identified as complex. Contour plots of mean winds, tides (12- and 24-hour), and planetary waves (PW) (2- and 16-day) demonstrate significant trends over 12¿ of latitude (1100 km). The 24-hour tide dominates at 40¿N, the 12-hour tide dominates at 52¿N, and PW structures demonstrate spatial and temporal intermittency. The two radars are now part of a new network, Canada U.S. Japan Opportunity (CUJO), stretching from 81¿W to 141¿E.