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Re: [IRCA] All-Digital AM Co-Channel Lab Test Results Unveiled



If the intent were for all stations to go digital, then such a test would
be meaningless; this suggests therefore that there is contemplation of
mixing all digital with analog all within the AM band ??

Russ Edmunds
15 mi NW Phila
Grid FN20id
<wb2bjh@xxxxxxxxx>

AM: Modified Sony ICF2010's (2) barefoot w/whip
FM: Yamaha T-80 & T-85, each w/ Conrad RDS Decoder;
Onkyo T-450RDS; Tecsun PL-310 ( 2);
modified Sony ICF2010 w/APS9B @ 15';
Grundig G8 w/whip; modified Sony ICF2010 w/whip


On Fri, Apr 22, 2016 at 1:03 AM, Chuck Hutton <charlesh3@xxxxxxx> wrote:

> Yes, desired to undesired is often-used nomenclature in the communications
> world.
>
> I don't see how you can correlate hybrid IBOC to all digital IBOC. What
> you hear with KRKO/KAST is different from what you will hear
> with all digital as the power spectrum and subcarrier levels are vastly
> different.
>
> Chuck
> ________________________________________
> From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> on behalf of Nick Hall-Patch <
> nhp@xxxxxxxx>
> Sent: Friday, April 22, 2016 4:51 AM
> To: Mailing list for the International Radio Club of America
> Subject: Re: [IRCA] All-Digital AM Co-Channel Lab Test Results Unveiled
>
> I presume "D/U" abbreviation in this piece refers to "desired / undesired"?
>
> I wonder if someone recorded audio from those tests, rather than just
> tossing dB's around?   I have a recording of KAST-1370 from this
> morning that says otherwise, with KRKO-1380 IBOC sidebands about 25dB
> down and....welll, KAST is readable, but I wouldn't say it's lacking
> interference.   The noise becomes really dominant if KAST is less
> than ~15dB above the IBOC level.
>
> best wishes,
>
> Nick
>
>
>
>
> At 21:05 21-04-16, you wrote:
> >
> http://www.radioworld.com/article/all-digital-am-co-channel-lab-test-results-unveiled/278670
> >
> >Sent from my iPad
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Be sure to register now for the Joint DX Convention
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Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx