Question about Garmin GPS
There is a known problem with the Nuvi antennas. Press the wrench icon, then the "gear" icon and then "about" and tell me what the GPS S/W field says. If it says a number like 2.9 or 3.0 that is good and tells me that the antenna is communicating with the main board. If it says 0.0 then the antenna is defective.
Also, try using an external antenna or just for fun, insert a piece of wire in the external antenna jack (with no shield) on the antenna and hold your finder over the satellite bar graph. You should then get a screen with all of the satellites in the sky.
Set the unit down with the piece of wire in the external antenna jack and see if it locates satellites after 10-15 minutes. If it's tring to find them, you'll see hollow blue bars appearing on the right and eventually they will download the data from the satellites and turn solid blue. When you get (4) solid blue bars, you'll see the accuracy rate start to go down and the GPS get more accurate.
There is a known problem with the Nuvi antennas where a part fails causing the antenna to no longer use the internal antenna and only will grab a signal from the external antenna port.
I am working on a fix for this.
Posted on Sep 29, 2008
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Posted on Jan 02, 2017
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