The Cart Before the IBOC Horse

Am I missing something here?
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Am I missing something here? It seems to me the National Radio Systems Committee is putting the cart before the horse ("NRSC Adopts IBOC Measurement Guide," May 20).

The text of the article even admits "the FCC has not yet adopted technical standards for IBOC." So if the FCC has not developed technical standards, how in the hell will making measurements tell you if you're in "compliance" with a standard that does not yet exist?

The article also claims this guideline should "help measure one station's interference with another." Terrific! So now we'll all be able to quantify the interference that iBiquity claimed wasn't going to happen.

Now that we can put a number to this interference, at least the FCC will now know how badly it is interfering with all of us when they do nothing to resolve it. I mean, it will make the commission appear to be doing their job, as they continue their cozy relationship with iBiquity and give us all the knowing wink and nod regarding "compliance."

Jerry Arnold
Midwest Communications
Terre Haute, Ind.


IBOC Interference

Anything greater than a 3 dB increase in IBOC power will not only cause problems for other broadcasters on first-adjacent and co-channel frequencies, but will also have a great potential for increased self-interference for stations.

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Some people predicted an “IBOCalypse” when AM HD operations went full-time on Sept. 14. The band would drown in a sea of digital hash, digital doomsdayers warned. It didn’t happen, at least not yet. But there is plenty to worry about on the AM IBOC front. First, let’s all agree that not enough stations have been

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‘The IBOC Handbook’ Cracked Open

Anyone interested in how IBOC actually works at a more technical engineering level has been hard-pressed to find much published documentation on the subject, other than white papers published by the technology developer itself.