Savage said:
But the problem is: there are no listeners largely because the technology is so flawed. And because the technology has so many problems - largely unsolveable interference issues dominate - there won't be any, or many, HD-capable radios either. On the infrequent occasion when a curious technie-listener actually buys an HD Radio, it generally goes back to the retailer because of unsatisfactory performance. (Which the vaunted HD-FM power increase won't help, BTW.) No listeners, Q. E. D.
Thus we keep on loping goofily around in the HD Error-Loop Circle. Because there isn't a viable innovation at the bottom of all this, there are no receivers, there are no listeners and there will be no advertisers. Because there is no revenue base, there is no industry interest. Because the technology can't feasibly be fixed, there is no interest in investing in it. And so on, and on, and on, and on.
Subcontractors are not going to be interested in leasing HD side channels - for the above reasons. If Clear Channel and Entercom and CBS can't make money on HD subs, neither can Gretchen's Screen Door Repair and Broadcasting Company. If there's no money, there's no money - no matter who programs and runs them.
Witness the pro-sports franchise "Winnemucca Flesh-Eating Birds All Hockey Channel" type HD subs. They're quickly learning that if they really want a dedicated-team radio station, they'd be better off hunting up a disused old AM station to buy on the cheap. At least everybody has an AM radio and if the facility is even reasonable they'll have at least a prayer of attracting a narrowcast audience.
Mr. Savage, what you trying to do here? I keep putting smiley face stickers on HD Radio and you keep pulling them off with inconvenient truths.

My observations were predicated on if HD Radio worked properly and if it had a significant penetration in the marketplace (you know, like OJ Simpson's book, "If I Did It").
Looking at today's (6/2) RW edition there are a couple of interesting points on HDR that I missed:
1. Ibiquity is trying to develop a method for AM stations to broadcast an RDS-type data stream without broadcasting HDR, that is to say, the station would broadcast an analog only signal. Of course, it will mean putting another box online and, I suspect, a license fee.
2. Ibiquity is also showing a concept called "Active Emergency Alert" in which an HD Radio will show an emergency alert even when it is turned off.
http://www.nxtbook.com/nxtbooks/newbay/rw_20100602/#/8
Then we have Bob Struble claiming that the software problems involving HD-AM are not iBiquity's fault but someone else's.
http://www.rbr.com/radio/ENGINEERING/94/24677.html
Finally we have this information from Bext on the KATY/KRTH interference complaint. They say KATY's complaint is legit because the FCC-required spacing between the KATY and KRTH transmitters is 113 km and KATY exceeds that by 21 km. Also, the interference is occurring within KATY's protected 60 dBu contour.
To sum up the problem, the Bext newsletter says:
"KATY's claim of HD interference from KRTH is reasonable considering not only the large amount of power run by KRTH
(67 times the Class B limit when KRTH's elevation is considered), but the fact that KRTH's upper HD sideband sprays noise power directly into KATY's first adjacent analog channel. That's because of a major design flaw in FM HD, and a similar flaw
exists in AM HD. This is why some call IBOC operations "In Band Off Channel" instead of "On Channel." The HD data
is sprayed into adjacent channels."
http://www.bext.com/_CGC/2010/cgc1011.htm
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