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Phil,
Thanks for the info. I'll keep an ear on the other two locals to see if and when they resume IBOCcasting. A quick check just now -- WHSR 980 and WWNN 1470 -- shows that has not yet happened.
WSBR's was off for a couple weeks. Since their IBOC walks on a station I check regularly, I probably caught that at the beginning. Only when I noticed their IBOC was off did I tune in the other two, so they may have gone off sooner. Since all three stations are licensed to the same company and are within a few miles of each other, adjustments might be done on all three, one at a time. This could explain why the other two are still off, or it could be they needed more work to correct. If your assessment of the outage is the case, I guess I can expect those two will be back shortly too...groan.
I don't know if the WSBR digital audio was getting out before -- who does, there are no radios -- but the noise certainly was there. I detect no improvement in the quality of the noise following the interruption for adjustments. Maybe I should report that to them. Think they would appreciate my diligence?
One thing I did today, was check the audible limits of the noise. The top to bottom frequency range for audible noise from the station on 740, was 758-722. So they wipe 750 and 730, and add noise to 760 and 720. So there is IBOC: 'In Band', all over it in fact, and I guess it's 'On Channel', if you include enough channels.
For the record, I have so far not received a response to the question I mentioned sending to the GM of WSBR, but it has been only a couple days.
W. Curt Deegan
Boca Raton, (Southeast) Florida
-------Original Message-------
Date: 06/22/05 15:29:49
Subject: Re: WSBR 740 IBOC
On 20 Jun 2005 at 20:58, WWWR wrote:
> A couple weeks ago I reported that local WSBR 740 had turned off their IBOC.
> Also off was IBOC on two sister stations, WHSR 980 and WWNN 1470, both are
> local but somewhat farther from me.
>
> Today WSBR resumed IBOC broadcasting. The other two stations have not.
I expect we will see quite a bit of this on a bit then off then back on
when stations convert to IBOC, especially the directional stations.
The reason is that IBOC doesn't always work well on the first try. Unless
a station's antenna system is very good, very wideband, the digital part
of IBOC may not transmit successfully. When that happens they have to
call in someone who is an expert on antenna systems and retune or modify
their transmission system. The same thing happened in the early days of
AM stereo, although IBOC is more demanding of a station's antenna system
than AMS.
You can expect that nearly all stations that have bought the license from
Ibiquity and invested in the transmitting equipment will be back on with
IBOC in three months or less.
Phil Alexander
Indianapolis
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