The antennas are directional in what is called a spot beam. If they were
omni they would cover equal distance North/South but a LOT more power
would be required to have the required EIRP to be received by the auto
antennas.
krj

Doug Dotson wrote:

So the antennas on the bird are directional targeted at the US? Otherwise
I would think that an equal area below the equator would be covered.

Doug

"krj" wrote in message
...

There are two satellites in geosynchronous orbit, XM-1 (named Roll) at 85
degrees and XM-2 (names Rock) at 115 degrees. Both are 24 transponder C
band satellites with antennas that are positioned to have a footprint for
the CONUS. The footprints extend slightly into Canada and Mexico and about
100 miles offshore.
krj

Doug Dotson wrote:

I thought Sirius and XM worked off of geosynchronous sats over the
equator.

"krj" wrote in message
.. .


Problem is that XM and Sirius only work in the US and near coastal
waters. No Coverage in the BVI and south.
krj

Larry W4CSC wrote:


Terry Spragg wrote in
:




Normally, I would want my entertainment radio to have excellant
reception, and could not bear to be at anchor on a hot, buggy night
with a nice new tune just barely distinguishable through a bad, noisy
antenna.



Is now a good time to show off the XM Radio satellite antenna magnet
stuck to the side of the fire extinguisher next to the hatch?...(c; One
of these days I gotta actually find a place to put it but it works so
good stuck to the fire extinguisher I hate to screw around with
something that always works. It's even sideways from the way it's
supposed to be stuck.....go figure??

XM is the way to fly, not that damned string of continuous commercials
spaced with minor bits of "programming" playing in between......on USA
commercial FM from Clear Channel.