Re: [IRCA] How local IS WBZ?

["CHARLES HUTTON" <charlesh3@xxxxxxx>]

You're right, IBOC falls off the edge of the cliff and basically you get it 
or you don't.

The real question is: where is the cliff? Cable TV generally tries to 
deliver about 40 dB of signal to noise ratio at the analog endpoint. Your 
snowy analog signal probably was somewhere around 15 to 20 dB S/N. DVB and 
IBOC and DRM function well at much lower levels - I don't have the charts 
handy but the levels are likely in the ballpark of 10 to 12 dB S/N.

So thank digital for hanging in there at levels that would yield poor analog 
performance.


Chuck

>From: mwdxer@xxxxxxxxx (Patrick Martin)
>Reply-To: Mailing list for the International Radio Club of 
>America<irca@xxxxxxxxxxxxxxxx>
>To: w4opw@xxxxxxxxx,        irca@xxxxxxxxxxxxxxxx (Mailing list for 
>theInternational Radio Club of America)
>Subject: Re: [IRCA] How local IS WBZ?
>Date: Wed, 17 May 2006 13:01:12 -0700
>
>Powell,
>
>If it becomes illegal to own a analog radio in the USA, I will no longer
>be here.  Howver, if that ever happens, I think we will be long gone.
>Powell, I don't know how old you are, but I am 57. But IBOC is not DX
>friendly as far as I know. On paper, maybe it shows it can skip or be
>received hundreds of miles, but being digital, I doubt it will be worth
>it. For example with analog satellite TV, like in 1985, when a signal
>would be weak, you you get a snowy picture but still watchable, until it
>faded out. The same with reg TV skip. However, with digital TV I now
>get, DVB, 4DTV, Mpeg, etc, either you get it or you don't. When the
>signal drops off you get what they call tiling, squares, and pieces of
>the pix are mising. The audio and pix freezes. You can't watch it and
>make any sense out of it. Bring in digital AM (IBOC), it may do exactly
>the same. I don't have an IBOC radio and I will never buy one.
>
>73,
>
>Patrick
>
>Patrick Martin
>
>Come to Seaside Oregon for the 2006 IRCA Convention! It will be held at
>the Comfort Inn on September 22-24,2006.
>
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