"Kristoff Bonne" wrote in message
...
Gegroet,

dxAce schreef:
... FM IBOC is a headache as far as trying to receive rimshot stations
on first and second adjacent channels.

It's just like DRM... It's QRM!

And the same argument applies as for DRM. What is radio-bandwidth for? For
people to listen to a radio-station or for DX-ers to receive some far-away
station?

Far more people are interested in better audio-quality or additional
stations then DXing.

As far as there is no conflict between these two groups of people, no
problem; but if -as is now the case- the gouvernement has to chose between
one or the other; the choise is pretty easy.

I can't speak for or against DRM, as I've never heard it. However, IBOC
*IS* a bad source of interference. And not just to DX'ers. Not everyone
lives in a big city, many (most?) live in suburbs or rural areas where there
is no 'local' radio station. These people of necessity must listen to what
are referred to as 'rimshots'. These are stations which are considered to
be on the far rim of a city's coverage area. Many of these are at only 400
KHz spacing from the stations in the cities, and are very prone to
interference from the IBOC digital signals from those second-adjacent
channels.

Even IN the cities, if someone likes to listen to a station in the next city
that has programming unavailable in their own city, this is now nearly
impossible.

As far as AM IBOC is concerned, it not only degrades reception of first and
second adjacent channels, it degrades reception of it's own analog on
channel signal, especially on radios designed with wider than 3 KHz IF
bandwidths (which includes most radios made in the 70's and before, of which
there are still tens of millions in use).