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Old 03-10-2008, 09:36 PM   #1
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GPS Antenna sharing

Does anyone have a setup that allows shared use of a GPS Antenna?

We would theoretically like to have three devices have access to a dash mounted GPS antenna.
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Old 03-13-2008, 10:16 AM   #2
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I am hearing crickets... lots-o-crickets.....

Does anyone have a rig where you have more than one device that needs a GPS antenna at the same time?
PC? handheld GPS unit? nav unit?
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2008 Ford 6.0PSD EB/E-PH SMB 4X4 Aluminess f/r bumpers (13.5mpg avg, 15mpg hwy) 52k miles [Texas McBeast]
2006 Toyota Prius (48 to 68 mpg) 120k miles [Penelope]
2013 Jeep Wrangler Unlimited Rubicon (15 to 18 mpg) [Johnnie]
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Old 03-13-2008, 01:02 PM   #3
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I could help you with how to share one GPS signal among multiple mapping software applications on the same computer, but that doesn't sound like what you're looking for.

You have several GPS receiver units, which all accept external antenna inputs, and you want them to share the same antenna, right? Before it reaches the GPS, you still have an analog signal, so I suppose maybe there's some kind of antenna coax-splitter widget out there, but I'd be afraid an N-way splitter would decrease the signal strength N-times.

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Old 03-13-2008, 01:08 PM   #4
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Eventually I plan on adding a second GPS receiver unit to my setup, so the passenger can see where we are on her laptop computer, too. The "mouse" GPS units (matchbox sized, with no screen or controls), such as the $36 GlobalSat BU-353 Water-Proof USB Mouse GPS Receiver - SiRF Star III (WAAS Enabled), are tiny and cheap enough that I having multiple GPS receivers isn't really a problem for me.



I currently have one of these mounted to my roof, but a second one would probably work just fine on the dashboard.

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Old 03-13-2008, 01:36 PM   #5
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Geoffff,

You are correct. We have a Garmin NUVI that we will mount to the face of the dash to the right of the driver, ... and we have a Garmin 76CS (i think) handheld that we will likely mount to the pillar to the left of the driver.... and we will have a laptop mounted over/near the doghouse for the passenger navigator to use. We really do not want to have three GPS antennas sitting on the dash, and we do not want to have to swap the antenna lead from unit to unit. I see us most often using the NUVI and PC at the same time.

Any and all suggestions are welcomed.
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2008 Ford 6.0PSD EB/E-PH SMB 4X4 Aluminess f/r bumpers (13.5mpg avg, 15mpg hwy) 52k miles [Texas McBeast]
2006 Toyota Prius (48 to 68 mpg) 120k miles [Penelope]
2013 Jeep Wrangler Unlimited Rubicon (15 to 18 mpg) [Johnnie]
2012 Mitsubishi MiEV (no gas required) ($.50/day in electricity) [Evie]
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