wgbh-hd3

[mgpt6]

Ibiquity lists WGBH-FM as having a HD-3 channel featuring news . Anybody with a HD Radio can confirm this. Is audio quality of the HD-1 and HD-2 lowered?

 

[Eli Polonsky]

Ibiquity lists WGBH-FM as having a HD-3 channel featuring news . Anybody with a HD Radio can confirm this. Is audio quality of the HD-1 and HD-2 lowered?

Yes, WGBH-FM HD-3 is NPR news, information, and talk programming. It appears to be duplicating some of the national and syndicated Public Radio programming also heard on WBUR.

There doesn't appear to be any noticeable degradation of their other HD signals.

 

[DanStrassberg]

There doesn't appear to be any noticeable degradation of their other HD signals.

But isnt it true that there is SUPPOSED to be degradation of the other channels because the total bit rate is fixed and the HD-3 bit rate has to come from somewhere?

 

[fybush]

Not if WGBH is using the "extended hybrid" mode, which creates an additional 25kbps of bandwidth (for things like HD3) in the "guard bands" between the top of the analog subcarriers and the bottom of the HD sidebands.

 

[necrat123]

On WGBH-HD3, at the top of the hour, you hear the legal ID for WCAI/WZAI.
At least the other day I heard that.

 

[necrat123]

OK just confirmed:
Top of the hour, you hear the legal ID:

90.1 WCAI Woods Hole
91.1 WNAN Nantucket
94.3 WZAI Brewster
89.7 WGBH-HD3 Boston.

So this is clearly a simulcast of the Cape Cod stations (or being used as an STL feed possibly).