[Translator Reform] Fill-ins: If we are granted priority fill-in translator in the window, do we have to rebroadcast the primary HD-1 or analog signal or is HD multicast simulcast permitted?

NOTE: This answer relates to a rule proposed by REC and does not reflect current regulations in effect:

While the intention was for these priority fill-in stations to assure a first or second NCE service within gaps of primary station coverage, there is nothing in the current or proposed rules preventing the priority translator from being used for HD simulcast. This is an unworkable loophole in the rule, which would be difficult to overcome without proposing a whole new regime of rules to prevent HD simulcasting, which is outside the scope of this proceeding.