Channel 19 is the WTVJ (NBC6) broadcast from Sunrise W19BJ
You would think that WTVJ will experience interference from WBZL's digital signal; but, I haven't located any comprehensive info on the subject.
However, I did find some old info about WTVJ's dilemna:From FEDERAL COMMUNICATIONS COMMISSION - MEMORANDUM OPINION AND ORDER ON RECONSIDERATION OF THE SIXTH REPORT AND ORDER - February 23, 1998:
NBC further states that a new DTV channel may be necessary for its station, WTVJ-TV in Miami, Florida. It states that it intends to move the WTVJ-TV DTV transmitter closer to the center of Miami in order to serve the entire Miami-Ft. Lauderdale market. NBC indicates that WTVJ-TV operates on channel 6 at a transmitter site located south of Miami and that operation from this location is needed because of a co-channel station in Orlando. As a result, WTVJ-TV currently operates two translators, on channel 58 in Hallandale and channel 19 in Sunrise, in order to provide service to the Miami-Ft. Lauderdale metropolitan area. According to NBC, WTVJ-TV was assigned DTV channel 30 in Miami with a maximum ERP of 1000 kW, but because channel 30 is first adjacent to the NTSC channel in West Palm Beach, Florida it may not be able to be moved to a new location without causing interference. NBC states that, if such a move cannot be made, it intends to apply for allotment of a new DTV channel that will permit it to move the station's transmitter site to a location closer to Miami. NBC did not submit a separate supplemental filing.
We note that MSTV's ex parte filing, to which NBC was party, did not recommend any DTV allotment change with regard to WTVJ-TV. We have reviewed the situation, and we confirm that WTVJ-TV's DTV channel 30 allotment cannot be moved closer to the center of Miami without causing additional interference. We do note that channel 58, which is now used by NBC to provide NTSC translator service for WTVJ-TV, could be used to provide complete DTV coverage of the Miami-Ft. Lauderdale area at that location without impacting any other stations. In view of the fact that we have no specific request before us at this time, however, we are not making any changes in the channel 30 DTV allotment for WTVJ-TV.