If full motion video is necessary, microwave systems are viable alternatives for schools. Microwave systems are cost-effective and easy to install if the transmission distance is less than 10 miles. Microwave is also the least expensive option for short distances. Leasing microwave towers can decrease costs for two-hop systems, but leasing still requires a large investment. Microwave transmissions can be affected by weather conditions.
Adverse weather can also inflict damage on microwave equipment.
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.