I'm trying to get more information on the type of DRM School Of The Air or the 
Flying Doctors may use, from what I understand its another variant on the DRM 
protocol, a DRM version of a trunking network, if that's the case then it would 
be near impossible to listen to without a particularly radio.


On 21/12/2011, at 1:25 AM, Martin McCormick wrote:

> That is interesting. I would be interested in knowing what
> frequencies are used as some of them could, at times make it to
> North America but it would be very rare.
> 
>       For anybody else reading, the DRM Dane is speaking about
> is not Digital Right Management although one might be able to
> include that in the protocol. It is Digital Radio Mundial which
> was a name coined that would work in many different languages.
> It is a method of digital audio encoding that makes short wave
> sound like a high-quality AM or maybe even a FM broadcast
> station. None of that selective fading and static crashes that
> give short wave its characteristic sounds as we know them.
> 
>       There's even DRM for amateur radio though I don't know
> any more than that.
> 
>       I've heard some demo recordings from DRM and they sound
> wonderful until a deep fade comes along and then it is just dead
> silence like all digital media. In other words, it's really good
> until it shuts off.
> 
> Dane Trethowan writes:
>> School Of The Air is still broadcasting on Shortwave apparently, 
>> someone's just sent me a frequency guide so I'll take a listen.
>> 
>> According to the information I've just received, School Of The Air are 
>> planning to use a mode of DRM on shortwave, now that will be interesting.
> 
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