This reminds me of the old "KPAM and FM" instead of "KPAM-KPFM". KYW has it right. Some of our stations say "Kxxx-HD1 and haven't IDed the main station in years!
"KPAM and FM" is not (and never has been) a legal station ID. Kxxx-HD1 may be legal. Same station ... same programming.
(1) Official station identification shall consist of the station's call letters immediately followed by the community or communities specified in its license as the station's location
Simulcasting stations of the same owner with the same city of license may give both, such as "KAAA and KAAA-FM, Valley Hills", so the completely proper ID with an HD would be "KAAA-FM and KAAA-HD1, Valley Hills". Saying "KAAA-FM and HD1" would be legal.
Although the letter of the law says only licensee name, frequency, channel number., or network affiliation may go between the call letters and city of license, it has always been recognized that words such as "in", "and", or "for" are allowable if they make sense or add clarity. "This is KAAA in Valley Hills," would be fine in this example.
When a station has AM and FM with the same calls, the FM has "-FM" after it. For an FM that does not share call letters with a TV or AM, they have the option of obtaining the call letter with "-FM" or without. Whichever way they do it must be reflected in the legal ID. LPFM's have the suffix "-LP" which must be used in the ID.
Sam Brown
I was told back in the day the proper way to ID and AM/FM Simulcast with the same COL would be WXXX, WXXX-FM West Podunk. Different COLs would be WXXX West Podunk, WXXX-FM North Skunkville. I would think HD would work the same way (WXXX, WXXX-HD1 West Podunk). Of course a lot of stations used "WXXX AM and FM West Podunk" and no one ever got fined unless it was added to a list of other violations. I've heard airchecks of WRKO and a couple of others that had the sung Johnny Mann (WRKO, Boston) followed by "AM and FM". That would have not been a legal ID for the FM.
In reality the Commission doesn't enforce legal ID verbiage anyway. There have been some NAL's handed out over the years for not even attempting an ID, but that's about it.
Maybe not lately but nearly 50 years ago, KISN had to change from "This is KISN, serving the great Oregon Territory from Vancouver." to "This is KISN Vancouver, serving the great Oregon Territory." Notice they never actually said "Portland".
In reality the Commission doesn't enforce legal ID verbiage anyway. There have been some NAL's handed out over the years for not even attempting an ID, but that's about it.
I believe that episode also involved a big legal battle and a nasty fine.