Re: [Swprograms] Interesting DRM wrinkle:Synchronizedsingle-frequency transmitters (Deutsche Welle)

["Mike Wolfson" <mwolfson@xxxxxxxxxx>]

I agree with one of Rich's comments.  I thought DRM was supposed to be more 
efficient powerwise.  How does using multiple transmitters save power or 
make things simpler.

This thread reminded me of a couple of articles that I read about digital 
TV.  After testing digital TV  technology, they found that either repeaters 
or multiple transmitters would be needed to cover the same service area as 
the current analog signal.  I don't have a source for this information.  Has 
anyone heard anything similar ?

Mike

----- Original Message ----- 
From: "Scott Royall" <royall@xxxxxxxxxxxx>
To: <rdcuff@xxxxxxxxx>; "'Shortwave programming discussion'" 
<swprograms@xxxxxxxxxxxxxxxx>
Sent: Wednesday, September 14, 2005 10:24 PM
Subject: Re: [Swprograms] Interesting DRM 
wrinkle:Synchronizedsingle-frequency transmitters (Deutsche Welle)


>I also agree, and I think DRM will be irrelevant until that is cheaply
> available.
>
> -----Original Message-----
> From: swprograms-bounces@xxxxxxxxxxxxxxxx
> [mailto:swprograms-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Richard Cuff
> Sent: Wednesday, September 14, 2005 9:15 PM
> To: softbulletin1@xxxxxxxxx; Shortwave programming discussion
> Subject: Re: [Swprograms] Interesting DRM wrinkle:
> Synchronizedsingle-frequency transmitters (Deutsche Welle)
>
> I agree - and told the DRM guys at the SWL Fest that the system needed
> to be "intelligent" if it was truly to be mass market-worthy.  In
> other words, the receiver would employ diversity reception or other
> techniques to assemble a clean signal from multiple parts or to seek
> alternate frequencies.
>
> We are several years away from that however.
>
> Richard
>
> On 9/14/05, Mike Barraclough <softbulletin1@xxxxxxxxx> wrote:
>>
>>
>>
>> The other requirement DRM needs is some form of
>> monitoring system so that the bandwidth and robustness
>> of the system can be altered at times of unfavourable
>> propagation, albeit at the expense of audio quality.
>>
>
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