Sirius Antennae
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
My experience even with an antenna on the top of my Avalanche is that Sirius loses the signal much more easily than XM. I've read stuff which explains the whys of it, but that didn't stick in my brain.
Le Mans Master
Joined: Dec 2002
Posts: 7,981
Likes: 37
From: Piedmont, SC Currently Own: 99 Nassau blue FRC. Previously Owned: 84,95,98 Indy Pace,01 Z06
On my sirius, I tried mounting the antennae behing the tail lights on the bumper support and could not get great reception. I also tried mounting it on the dash, but still the reception was poor. So then I got fed up with it and mounted it on the top part of the bumper,lol. Here is a pic.
Racer
Joined: Apr 2006
Posts: 256
Likes: 0
From: Huntsville AL
I just finished my install and moved my XM antenna from the roof to behind the tail lights in the process (had XM in the car before I started my install). I dont get near as good of a reception as I did get... in fact it cuts out so much that I am strongly debating moving the antenna back to the top of the car.
Melting Slicks
Joined: Jan 2002
Posts: 2,682
Likes: 0
From: Atlanta GA
Do I dare say that XM just comes in better than Sirius? I switched from XM to Sirius when I installed my Eclipse. I put the Sirius antenna in the exact same spot as the XM antenna and drive the exact same way to work each day. There are several places where Sirius will cut out, but XM never did.
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Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
Do I dare say that XM just comes in better than Sirius? I switched from XM to Sirius when I installed my Eclipse. I put the Sirius antenna in the exact same spot as the XM antenna and drive the exact same way to work each day. There are several places where Sirius will cut out, but XM never did.
I forget the technical details, but the systems they use are quite different and Sirius doesn't have the same coverage as XM. Vague memory that Sirius's bird isn't geostationary.
Race Director
Joined: Oct 2000
Posts: 14,060
Likes: 1,166
From: N. Alabama
I just switched to sirius after having xm for 3 years or so. I like the music and sound better with sirius but it does cut out from time to time under overpasses. Still, I am more satisfied with the sirius programming in spite of the trash talk programs.
Team Owner
Joined: Jun 2001
Posts: 26,196
Likes: 0
From: Orlando FL
St. Jude Donor '08-'09
are the XM antennas different in some way? I figured satellite was satellite.. the same as the GPS antennas and Sirius antennas...
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
It's not the antennas that are really different (slightly, but still interchangable for practical purposes) it's the satelitte broadcast system used. I've seen the details posted here before but they didn't stick in my brain. What it comes down to is that the XM satellite system just provides better coverage than the Sirius system.