 Digital television, however, does not have this feature, and after the transition, this additional method of reception is no longer available.WRGB, channel 6 in Albany, New York, used a separate transmitter on 87.7 that transmitted a vertically polarized analog audio signal, which would theoretically avoid interference with the horizontally polarized digital TV signal.This would allow the station to keep its audio on 87.7 FM after the transition to digital.