Re: [IRCA] IBOC DXing

["David Gleason" <david@xxxxxxxxxxxxxxxx>]

Some of us have measured the useful coverage of the digital AM signal vs. the HD signal. In markets with high noise, like LA and NY, the HD signal is usable at greater distances than the analog signal. Similar testing by Tom Ray at WOR have born out the finding that stations can increase their interference free coverage with HD.

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From: irca-bounces@xxxxxxxxxxxxxxxx [mailto:irca-bounces@xxxxxxxxxxxxxxxx] On Behalf Of N0UIHEric@xxxxxxx
Sent: Sunday, September 18, 2005 11:56 AM
To: irca@xxxxxxxxxxxxxxxx
Subject: Re: [IRCA] IBOC DXing

 

IBOC would require 500 kW of power to equal analog coverage on 50 kW. There is simply no room for 500 kW AM stations in the U.S., with the AM allocation table the way it is. If you remove the analog signal, then the IBOC signal on 50 kW would get out, at most, the same range as a Class B1/C3 FM station (25 miles). A 1 kW graveyarder, with the analog signal removed, would cover less ground than a 10-watt LPFM.

 

73, Eric (N0UIH)

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