Schools mull digital TV's implications

US schools have less than four months to prepare for the switch from analog to digital TV broadcasting. But there is still a great deal of confusion about what, exactly, this switch will entail -- and whether schools and other institutions are ready. The impending switch has prompted many school technologists to consider "what-if" scenarios. One of their chief concerns is whether the coaxial radio-frequency cable networks that currently carry analog TV content in schools will be able to handle digital content adequately.