🚀 go-pugleaf

"Hein ten Horn" <tenhornRemovE@ThiSraketnet.nl> wrote in message
news:47151200$0$239$e4fe514c@news.xs4all.nl...
> Frank Dresser wrote:
> >
> > IBOC was engineered from the get-go with compatible recievers in mind.
> > The receivers would autoswitch from the analog to the digital signal.
> > Was DRM engineered with such autoswitching receivers in mind?
>
> Obviously a DRM receiver can handle both analogue and
> digital signals.
> Once a DRM signal is received, all parallel frequencies of
> the service are automatically stored in the receiver's memory.
> If the signal becomes weak the receiver will automatically switch
> to a better signal (if available), even in other bands.
> With a small amount of digital information added to an existing
> analogue AM broadcast (AMSS, AM Signalling System) the
> receiver recognizes the alternative frequency information and
> schedules for other DRM, DAB, AM and FM transmissions
> carrying the same or related programme material.
> When you tune in to an analoque AM transmission on 630 kHz
> in the medium wave band the receiver could let you listening to
> for instance a DRM broadcast on 9740 kHz on short wave.


That's interesting, and I can imagine that approach working well.  There
would be no need for the adjacent channel digital interference which is
designed into IBOC.

So it looks like DRM can be better than IBOC.


>
> > Are any such autoswitching receivers currently available?
>
> Himalaya DRM2009
>
http://www.himalaya.com.hk/index.php?option=com_content&task=view&id=17&Itemid=28&lang=en
>
> Morphy Richards DRM Radio
>
http://www.morphyrichards.co.uk/index.pl?REFID=mruk&ORPGM=productOverview&ORPGT=perl&ORPRD=27024&ORGRP=R11&ORCAT=SR03&ORLID=ENG
>
> Both receivers are equipped with the modern RadioScape
> RS500 module.
>
> gr, Hein
>

Thanks for the info!

Frank Dresser