Wiktionary
bkn
a. (context meteorology English) broken (as in cloud cover)
Wikipedia
BKN
BKN, or Bohbot Kids Network (also BKN Kids), were syndicated blocks of animated TV series owned by Bohbot Communications and its subsidiaries or successors. BKN also is used to referred to Bohbot Communications and its subsidiaries or successors.
BKN Kids and BKN Kids II did not initially share programming as to grant the networks Syndex protection.