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11-01-2017, 11:59 AM
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#1
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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GM Onstar/Navigation antenna
Anyone here know if the Onstar antenna will work for other purposes? In the Suburban I will have 2 GPS enable devices, so I will need two antenna's (actually 3, but it's not a big deal on the third). I was already planning on putting a GM XM antenna on the roof for my Sirius, so I was thinking if I got the XM/GPS/Onstar antenna it would prevent me from putting 2 up there. I am wondering if I can use the Onstar for a second GPS instead though, or if not a cell phone booster, and have to go with two antenna's anyway. Or if I can split the signal off the one GPS antenna to work two GPS devices?
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11-01-2017, 01:14 PM
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#2
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American Road Warrior
Join Date: Jul 2005
Location: Wastelands of NJ
Posts: 6,116
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You need a 20 foot long CB whip antenna. "Breaker one nine! Breaker one nine! Hey Polar Bears, ya got your ears on, buddy?"
__________________
unstable bob gable: LEGENDARY LEGEND,
ICONIC ICON, AND AMERICAN BAD AZZ!!!
1991 Dodge Spirit R/T: Gran'pa lookin' 150+ mph turbo rocket.
2013 Dodge Avenger RT: Wastelands cruiser.
2008 Crown Vic Police Interceptor: 'Nuff said!
THE ONLY THING THAT SUCKS WORSE THEN IMPORTS ARE RICED OUT IMPORTS!!!
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11-01-2017, 01:19 PM
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#3
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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Quote:
Originally Posted by unstable bob gable
You need a 20 foot long CB whip antenna. "Breaker one nine! Breaker one nine! Hey Polar Bears, ya got your ears on, buddy?"
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If I could CB from the new head unit, I would, but I don't want more devices in there, nor a giant antenna 
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11-01-2017, 03:42 PM
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#4
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American Road Warrior
Join Date: Jul 2005
Location: Wastelands of NJ
Posts: 6,116
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Quote:
Originally Posted by PolarBear
If I could CB from the new head unit, I would, but I don't want more devices in there, nor a giant antenna
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10-4, Good Buddy!
__________________
unstable bob gable: LEGENDARY LEGEND,
ICONIC ICON, AND AMERICAN BAD AZZ!!!
1991 Dodge Spirit R/T: Gran'pa lookin' 150+ mph turbo rocket.
2013 Dodge Avenger RT: Wastelands cruiser.
2008 Crown Vic Police Interceptor: 'Nuff said!
THE ONLY THING THAT SUCKS WORSE THEN IMPORTS ARE RICED OUT IMPORTS!!!
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11-01-2017, 07:57 PM
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#5
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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Is the dash on the burban metal on the top? I have put the gps antenna under the dash without problems on a few vehicles with plastic dashpads
__________________
2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
Last edited by deadtrend1; 11-01-2017 at 07:57 PM.
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11-01-2017, 08:09 PM
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#6
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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Quote:
Originally Posted by deadtrend1
Is the dash on the burban metal on the top? I have put the gps antenna under the dash without problems on a few vehicles with plastic dashpads
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Yes it is, but since the angle of the windshield is very steep there is not a lot of "sight" to the sky, especially when I am driving a certain direction I lose signal on the Sirius and sometimes the GPS speedo. I am definitely putting a factory GM antenna up there, so I figure I may as well kill two birds by using a multi antenna, I was hoping to get even more use out of one.
I spoke with a vendor on ebay about them, and it turns out they use one antenna for Onstar and GPS? Thats what they told me anyway, GM splits the signal in the car, the same wire is used for the Onstar and then it also runs to the radio module for navigation. I am probably going to have to get one with the three connections and just try it and see what works. They were a bit confused and said they haven't sold one for retrofit like this before, just people trying to upgrade factory radios, so they aren't sure if what I want to do will work
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11-02-2017, 09:23 AM
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#7
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The Mayor / 2009 Member of the Year / Moderator
Join Date: Jan 2005
Location: Northwest
Posts: 8,869
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Our new Onstar/sirius GM vehicles have one fin antenna. I have no idea how they work it, but that I know.
__________________
1995 Z28 Convertible A4 13.78 @ 100 (CAI, high flow cat, catback, 160 thermo, hypertech, Strano springs, Koni yellows, sway bars, 3 pt. UMI SFC)
2018 Sea Doo GTX - 3 cylinders and das boooooost
Quote:
Originally Posted by BonzoHansen
Is English your 2nd language? Did you graduate high school? Your posts make my head hurt.
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 Team FARM 
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11-02-2017, 09:56 AM
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#8
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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Quote:
Originally Posted by Anti_Rice_Guy
Our new Onstar/sirius GM vehicles have one fin antenna. I have no idea how they work it, but that I know.
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11-02-2017, 12:08 PM
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#9
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The Mayor / 2009 Member of the Year / Moderator
Join Date: Jan 2005
Location: Northwest
Posts: 8,869
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Quote:
Originally Posted by PolarBear
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__________________
1995 Z28 Convertible A4 13.78 @ 100 (CAI, high flow cat, catback, 160 thermo, hypertech, Strano springs, Koni yellows, sway bars, 3 pt. UMI SFC)
2018 Sea Doo GTX - 3 cylinders and das boooooost
Quote:
Originally Posted by BonzoHansen
Is English your 2nd language? Did you graduate high school? Your posts make my head hurt.
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Team FARM
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11-02-2017, 12:11 PM
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#10
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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Quote:
Originally Posted by Anti_Rice_Guy
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11-02-2017, 12:32 PM
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#11
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,367
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Quote:
Originally Posted by PolarBear
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11-02-2017, 01:34 PM
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#12
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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Quote:
Originally Posted by sweetbmxrider
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11-02-2017, 02:46 PM
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#13
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,367
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Quote:
Originally Posted by PolarBear
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