27285 is CB channel 28, one of the high power "AM DX" channels, companion to channel 26 (27265). Other high power AM CB frequencies include channel 6 - The Superbowl (27025), channel 11 - the original AM calling channel back when CB required licenses and was only 23 channels - channel 11 being 27085. People will run high power on any of the 40 channels (and above and below the legal band, of course), but 6, 11, 26 and 28 are the big ones...which makes it that much more interesting that people are transmitting music over all the other signals on a heavily used frequency.