Frank Dresser wrote:
"Ruud Poeze" wrote in message
But with DRM you loose your analogue audience, since it is digital only.
So for a long period of time you need 2 frequencies and 2 transmitters
at least per channel! Impossible on AM, and SW broadcasters will have a
I can't see why any US MW broadcaster would have any interest in DRM, even
if the FCC allows it.

On the other hand, we do now have "duopoly" in the U.S. - it's now legal
for the same company to own more than one AM station in the same city.

WLAC could, for example, buy WAMB-1160. Convert WAMB to DRM, and use it
to carry the same program (but in digital mode) as WLAC. Once (if!) the
majority of listeners have DRM radios, they could swap stations for a
few years. (converting WLAC to DRM and WAMB back to analog) When the
number of analog radios in use becomes negligible, either shut off WAMB,
sell it to someone else, or start a second DRM station.

Most group owners are still far enough short of the limit for the number
of AM stations they're permitted to own in most major markets, and there
are generally enough "also-ran" small AM stations available to buy. The
coverage of the DRM stations would be less than that of the existing
analog outlets, but if the IBOC adjacent-channel interference from other
stations isn't there then the actual coverage with DRM might well be
*better*.

Of course, the *right* answer (for the listener, not for the DXer!) is
Eureka on VHF/UHF.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com