[Ham-Mac] RF from XM radio

Lon Kinley majorlk at us.net
Mon Mar 5 08:06:01 EST 2007


>Lon,
>
>On Mar 4, 2007, at 8:09 PM, Lon Kinley wrote:
>
>>At 7:29 PM -0800 3/4/07, Robert C. Smithwick wrote:
>>>Interesting. I'm learning a lot from your comments and those of 
>>>others. I know nothing about "Sirius". Yes, I've heard the word 
>>>before and sorta 'figgered' it is perhaps a network of Internet 
>>>broadcast stations, but that may be way off. You can easily spot 
>>>my ignorance!!
>>>Thanx for the brief introduction to it!
>>
>>Sirius and XM are both satellite broadcasters, i.e. all their 
>>programming is broadcast to earth from a satellite. They have just 
>>merged into one company, however. It has nothing to do with the 
>>Internet
>
>They have proposed merging, but it needs FCC approval.  Once 
>condition of the current licenses was that they would not merge.
>Hard to tell what will happen.

They are both announcing that it's a done deal, although it really isn't. :)

>>The little satellite receiver picks up the signal from the 
>>satellite and then feeds it into your vehicle's radio, either by an 
>>induced signal into the cassette deck from an adapter, or by a VERY 
>>low power FM modulator that either physically attached to the 
>>external vehicle antenna or inductively coupled to an in-glass 
>>antenna. In either case, any RF exposure is essentially 
>>non-existant.
>
>It's understand that they also broadcast terrestrially in major 
>cities.  Satellites don't work that well in major cities with tall 
>buildings.

That's true - they do here in Baltimore. I get a good signal in my 
parking garage downtown.

>73,
>Bob / KI6ASK
>
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