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Uses for HD-2 and HD-3 streams

L

Len14043

If HD radio catches on, perhaps it could be beneficial to low power AM stations.
From what I am reading, the HD-2 streams can be heard 25-50 miles from the tower. AM stations currently assigned to frequencies like 1230, 1240, 1340, 1400, 1450 and 1490 have a listenable range of 30 miles during the day, and usually less than 10 miles at night. These stations might be inclined to move to HD-2 or HD-3 streams to increase their range. High power AM stations would have less to gain because their HD signal would be robust for greater distances. Wouldn't it be nice if the low powered AMs moved to the FM band and left the AM band for the powerful stations? If that happened, perhaps the FCC would consider changing the allocation scheme for the AM band. While that seems unlikely now, HD radio may produce unforeseen changes in the future.
 
Kent had his own theory about that on the Indiana board a while back. He had stated that he heard from someone at CC that eventually they could run up to 8 channels, but a theory of his is that the broadcasters may elect to have most if not all the AMs shut down and move those ninche formats ie Ethnic, Religion, Radio Disney, etc etc to the HD-3, 4, 5, 6, 7, 8, whatever streams exist.

I could see that happening myself.
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> If HD radio catches on, perhaps it could be beneficial to
> low power AM stations.
> From what I am reading, the HD-2 streams can be heard 25-50
> miles from the tower. AM stations currently assigned to
> frequencies like 1230, 1240, 1340, 1400, 1450 and 1490 have
> a listenable range of 30 miles during the day, and usually
> less than 10 miles at night. These stations might be
> inclined to move to HD-2 or HD-3 streams to increase their
> range.

That takes care of coverage issues. However, the "layered display" approach displays the host's call letters. If WAAA uses WBBB's HD2 the credit will go to WBBB until Arbitron's Peoplemeter is universally adopted. WAAA's signal will be displayed as WBBB-HD2.

Rich
 
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