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[ale] XM redux...



Brian - Thank you for injecting some sense into that post.
;)





Brian J. Dowd wrote:
>> OK, this leads me to ask something I've been wondering about.
>>
>> I don't know how many channels one can select from with XM/Sirius
>> (hereafter, simply XM), but I understand that it's A Lot (i.e., more
>> than 100).  
>>     
> XM is currently 170.
> I own 4 of these receivers... and next to my
> Tivo it's the best $6.95 x 4 a month I spend!
>   
>> My question is, does the XM receiver actually receive all of
>> the data stream from all of the channels at once and select from among
>> them (which is what in effect occurs with terrestrial radio), or is
>> something transmitted from the receiver upstream when the XM radio is
>> turned on or when a channel is selected?
>>   
>>     
> It receives all channels simultaneously and the streaming stock quotes 
> sequentially.
> These signals are sent from the satellite and simultaneously as a 
> terrestrial sub-carrier.
>   
>> If the latter is in fact the case, I find the notion chilling due to the
>> social engineering implications of a mass medium in which the medium
>> knows exactly what each and every recipient is receiving, present and
>> past. 
>>   
>>     
> I'm sure they wish they knew who was listening to what.
> But they don't.
>   
>> It is my understanding that each XM receiver must have an associated
>> subscription, and I surmise that each subscription has an associated
>> receiver owner identification.  
>>     
> that is correct
>   
>> If "the system" is told by each receiver
>> what channel to receive, then every subscriber would have an
>> ever-lengthening dataset showing what program, song, announcement - any
>> program material at all - was output by the receiver(s) covered by their
>> subscription. 
>>   
>>     
> The radio never communicates with the satellite.
> Only the reverse it true.
>   
>> I can already imagine people who haven't sufficiently assembled two and
>> two saying, "I don't care if 'they' [single quotes mine] know what I'm
>> listening to."
>>
>> Indeed?
>>
>> Let me run some scenarios by you, just based on the premise that "they"
>> have a dataset of your XM radio channel selections and yours alone.
>>
>>     * Your employer pays the XM provider to obtain a list of channels
>>       you listen to and when you listen to them.  This information is
>>       used against you at performance review time to suggest that you're
>>       listening to the radio when you should be working. 
>>     * You have a car accident involving another party and you are either
>>       sued by or suing the other party.  The other party's attorneys
>>       purchase your XM radio data and testify in court that you changed
>>       channels on your radio five times in the thirty seconds before the
>>       accident, implying to the jury that you were excessively
>>       distracted while driving. 
>>     * A highly liberal employer in an "At-Will" state decides you listen
>>       to a little too much Sean Hannity for their taste.  Your "position
>>       is eliminated."
>>
>> Include the notion of *everyone's* channel data being recorded for all
>> time and you can begin to see the amount of power that an XM provider
>> can potentially wield - the closest thing you can reasonably imagine to
>> a remotely-controlled populace existing in the world of today. 
>>
>> It occurs to me that even if XM radio is strictly one-way, the nature of
>> the system is such that the provider can make program material
>> selectable on a per-radio basis. 
>>   
>>     
> That is true. You can block whatever stations you want by going on-line and
> telling them to do it.
>  <snip>
>
> Brian, W1DOC
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