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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