A "grey market" for digital satellite radio could open up next year in Canada, no matter what the federal government decides to do about the issue of harmonized radio frequencies, an industry expert says. Industry Canada is considering bringing certain radio frequencies in line with those in the United States. The band that has Canada’s broadcasting industry worried is 2320-2345 MHz, frequencies that will be used in the U.S. for digital audio radio service by satellite (DARS). Some broadcasters want the department to hold off on decisions until there is a comprehensive review of satellite radio in Canada.