[opendtv] Re: Accurian DTV STB from Radio Shack
- From: Ron Economos <k6mpg@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 11 Oct 2005 03:51:55 -0700
XM and Sirius operate in S-band, 2320 - 2332.5 for Sirius
and 2332.5 - 2345 for XM. Here's a link with some
technical details.
http://www.coe.montana.edu/ee/rwolff/EE580/final%20projects/SDARSReport.pdf
Ron
Manfredi, Albert E wrote:
>Bob Miller wrote:
>
>
>
>>Without doing the research, I think that XM
>>and Sirius have about 4 MBps total capacity
>>and fit 100 + radio channels in that.
>>
>>
>
>I couldn't quickly find XM Radio or Sirius Radio
>frequency allocations. But the original satellite
>radio system, WorldSpace, transmits 50 channels
>of 128 Kb/s audio in the 1,467 to 1,492 MHz
>segment of the L-Band.
>
>So,
>
>50 * 128 is 6.4 Mb/s total
>
>6.4 / 25 is 0.256 b/s/Hz.
>
>I'm pretty sure terrestrial digital radio could
>get by with more like 1 b/s/Hz.
>
>Bert
>
>
>
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