Letter/number nicknames, and "rounding off"...

[Brian Vita]

> First:  The assigned call sign is WDRC-FM, so it must be stated exactly
> that way in the legal ID.
> 
> Second:  Since HD running in extended hybrid mode is capable of three
> secondary channels plus a data channel, ID'ing as HD does not identify
> which HD channel is simulcasting the analog channel.  HD1 makes that
> clear.
> 
[Brian Vita] If you are running multicast HD, do you have to identify HD-1,
HD-2 & HD-3 or can you just ID them as WXYZ-HD (same ID on all 3 streams)?