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Author Topic: ONStar (ON*Star) antenna recycling?  (Read 430 times)
W1ES
Member

Posts: 18




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« on: June 08, 2009, 12:34:19 PM »

I've got a 2002 Saab that has a (useless/obsolete) ONStar unit in it.  I'd love to re-purpose the location on the roof where that "shark-fin" antenna is and am wondering how easy could this be?  To that end, I'm figuring at least one or two hams out there have already done this, so I'm asking for your input.

1.  What's the fitting that goes through the roof?  Do you have to unbolt from inside and junk the whole "shark-fin"?
2.  Does anyone know what the size of the hole in the roof is?  Would it take an NMO or would it need to be enlarged?
3.  Here's the potential time-killer or time-saver - depending on what's "in there":  What's the impedance of the coax feeding the "shark-fin" and where does it terminate at the front of the car?  It would be nice to be able to re-use the coax and avoid having to fish a new one through.

TNX es 73,

Steve, W1ES
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KC9JCH
Member

Posts: 29




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« Reply #1 on: June 24, 2009, 10:26:02 AM »

Here's one idea...
http://members.cox.net/onstar/
Use the gps functionality of the OnStar unit to run APRS without a second GPS.  Tells you how to get NMEA out for your APRS radio.
Tim
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