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#10
May 29th 06, 05:43 PM
posted to rec.radio.shortwave
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IBOC at Night and the Local/Regional AMs
"Frank Dresser" wrote in message ... "David Eduardo" wrote in message . net... "Frank Dresser" wrote in message ... "David Eduardo" wrote in message news  Since it only affects Am significantly, and does not affect AMs with good signals, we are talking about very few stations that are otherwise viable being affected. I take it that electromagnatic interference from home electronics isn't significantly reducing the radio audience even though they are listening to analog radios. This one has been proven. A look at ratings from the 70's and even 80's show listening ZIP codes to include significant listening in those in the 5 mv/m to 10 mv/m range. Today, in most large cities, the listening is almost entirely in the 10/mvm or better... in LA, it is mostly in the 15 mv/m, for example. The difference is not new stations, as most larger markets have had no new stations in that period, but the difficulty in listening... and listener expectations of better signals and less noise. And that's "very few stations that are otherwise viable being affected."? I don't understand the question. |
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