"David Eduardo" wrote in message
om...

It is a separate digital signal riding along on the analog signal.
Separate
power.



"seperate power" might imply a radio station would have to seperate a
portion of power from the analog channel for the IBOC channels. So, a 50 kW
station would have to seperate, say, 20 kW for the digital channels and
leave 30 kW for the center analog channels. Is that how it works, or would
the analog channel retain it's original power with the digital channels
getting additional power?

Frank Dresser