Picture Turns Bright for UHF
Ultrahigh-frequency TV stations, on band encompassing channels 14 to 83, have come into high demand in last year; dozens of UHF stations without network affiliation have been sold for prices ranging up to $15.5 million; FCC is considering 233 applications for new commercial stations in 100 cities; experts predict that renewed interest in UHF stations will result in creation of 4th commercial network; many applicants for new stations are companies organized by blacks and other minorities; total revenues for UHF stations in '78 were $510 million, up from $400 million in '77; industry experts Howard E Stark, Richard C Block and Ellen Berland Sachar comment; graph indicates growth of UHF TV, '70-78 (M)