Microwave frequencies are not always available, and geographic topography may limit microwave feasibility. Compressed video systems offer the quickest and easiest solution for creating an ITV network between two schools. A compressed video system can be installed with little need for extensive construction. Most educators say they prefer a full motion system, but research indicates that compressed video is effective and satisfactory and that the picture quality of the compressed video technology is constantly improving. Most viewers do not object to small sacrifices of color, motion, or resolution.
Successful users indicate that content takes precedence over image quality.
Microwave for distances under 10 miles was a cost-effective way to connect two schools. Distance significantly affected the costs of fiber and microwave. Both became cost-prohibitive ways to connect two sites as distances increased. Compressed video system costs were the least affected by distance. Most experts recommended using digital technology, which offers superior quality.