XM vs Sirius
Mike
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XM here, and mainly due to them being the only ones haveing a Plug'n'Play unit when i got into sat radio. i find their service to be pretty good for me.
Second Sirius finally has a Plug'n Play reciever comming out for the 4th quarter. Should even be smaller than the XM's.
all their previous ones were bricks or very very poor design. that tall *** JVC one is a perfect example. huge!
They have had PNP units for some time. took about 2 years after their launch to have them.
as for signal, XMs birds are over the equator so you have to have a southern sky view. Sirius's are in an elliptical orbit with a 4hour loop over the northern US border. giving it a more straightdown look. with XM an aimable antenna is a viable and solid option. with sirius aimables are a little more of a pain, hard to lock in on a moving target. so you really need to try a few positions before it works well.
XM uses two satellites in geosynchronous orbits ("Rock" and "Roll") that are in the southern sky over the east and west coasts. Sirius has three satellites that move across the US in orbits that place them more directly above the country. XM antennas need to have a southern view whereas Sirius is more straight overhead. Out on the open road you can lose XM signal just by having a large truck pass on your south side. However, XM has many more repeaters in large cities than Sirius does so the difference is not as great as it might be otherwise.
Experts agree that both satellite services' sound quality degrade rapidly with falling signal strength. This leads to sound quality comparisons that are actually signal strength comparisons.
XM uses AAC compression and assigns equal bandwidth to each of its channels. Sirius uses a proprietary compression algorithm that also dynamically assigns bandwidth based on need. This gives Sirius something of an advantage in music sound quality but makes their talk channels' sound quality really bad (hollow sounding like from a tunnel). Both services have problems with loud, high frequency music reproduction (trumpets, cymbals, etc.) which are bad enough that even a non-audiophile will ask what's wrong with the music.
For the most part, both services are about comparable to 128-bit MP3 recordings - nowhere near CD quality but better than FM radio and without the multipath interference inherent in broadcast FM.
OPIE AND ANTHONY on XM is just killing stern, now and even when he goes to the doggy company.
Hoo Hoo I invented radio...Tell em fred. Hoo Hoo
And now Ron and Fez on XM.
Hoo Hoo thats right robbin!
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