HD Radio receivers and HD-n (n>1) subchannels

[Brian Vita]

With the Sangean units HDT and HDR's you tune, either manually or in scan to
the desired channel.  If it's available in HD (AM or FM) it will lock on and
automatically switch.  On FM, to get HD-2 or HD-3 you would then tap the
TUNE button once or twice to get to HD-2 or HD-3 respectively.

For a while I had WMJX-HD-2 on in my office.  This was apparently during the
period when they had troubles with their HD-2 feed.  I would go home with
HD-2 playing and come in the next morning to hear HD-1 playing (we leave the
system on 24/7).

I was unsure about the WBZ/WODS HD-3 feed but I tried it and it works like a
champ and sounds better than WBZ-AM-HD.

I'm in a hollow in Peabody with an attic mounted Radio Shack VHF/UHF/FM
antenna partially assembled in my attic.  Its soon to be replaced with a
TERK AM/FM HD outdoor antenna, if I can still get one.  My suppliers have
them but TERK has removed them from their site.  I'm guessing that they're
discontinued.  We installed one of these at WMWM for our OTA/EAS receivers
and the reception there is awesome.

Disclaimer:  I am a Sangean dealer.




Pro Cinema - Pro Audio - Pro & Consumer AV Equipment & Supplies


Brian Vita
President 
Cinema Service & Supply, Inc.
77 Walnut St - Ste 4
Peabody, MA 01960-5691 
brian_vita@cssinc.com
AIM: btvita 
tel: 
fax: 
978-538-7575 
978-538-7550 





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> -----Original Message-----
> From: boston-radio-interest-bounces@tsornin.BostonRadio.org
> [mailto:boston-radio-interest-bounces@tsornin.BostonRadio.org] On
> Behalf Of Jim Hall
> Sent: Thursday, February 19, 2009 9:09 AM
> To: 'Boston Radio Interest'
> Subject: RE: HD Radio receivers and HD-n (n>1) subchannels
> 
> On my Sony XDR-S3HD there are no pushbuttons for HD:  you tune to the
> frequency and wait a second. If the radio detects HD, the display will
> change to From WXXX to WXXX-1, then you turn the main tuning knob one
> click
> to the right for the HD-2, another click for the HD-3 (and the display
> will
> change to WXXX-2 and WXXX-3).
> 
> 
> 
> Are existing HD receivers able to decode this extra bit-stream? If so,
> how does the listener select it? My understanding is that HD receivers
> are equipped with HD-1, HD-2, and HD-3 pushbuttons. If there is no
> HD-4 button, is one of the main-bit-stream subchannels sacrificed if
> you tune to a station that is transmitting the extra bit stream? If
> yes, is the sacrificed channel always HD-3? That is, if a station
> chooses to use the extra bit stream, is the normal HD-3 channel always
> the one sacrificed? Or is there, perhaps, just one HD-channel
> pushbutton that, through repeated presses, cycles through all of the
> HD subchannels that the selected station is transmitting?
> 
>