Question about Garmin iQue 3600 GPS Receiver

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Internal antenna works but can 't get external to work

I just bought an external antenna (Garmin GA 25MCX). The antenna does not seem to work with my iQue 3600. The internal work fine. Is there a setting that has to be changes to make it work? When I plug it in it gives me the same screen as when I flip up the internal antenna but I acquire no satellites.

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Sounds like ext antennae is sick. Mine works 100% just by plugging into 3600

Posted on Oct 08, 2008

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How do I see the rest of this solution? Garmin Nuvi 660 GPS Receiver Problem: Garmin Nuvi GPS won't acquire satellites Solution by: wingflinger (1 solutions) There is a known hardware bug in the...


you should see it now
There is a known hardware bug in the Garmin 600 series relating to the detection of the connection of an external antenna. The GPS is supposed to do this automatically and when it detects an external antenna plugged in it switches out the internal antenna. Unfortunately, this circuitry doesn't work correctly in some versions of the unit and sometimes it get's comfused and thinks there is an external antenna connected when there is not. This causes the behavior you describe because, for all practical purposes, there is no antenna connected.

Garmin can fix this and they've been known to fix it even on units that are out of warranty. There is a fix that can be done by someone with the right equipment and know-how which requires disassembling the unit and bypassing the antenna switch. Not to be attempted by anyone not experienced in micro surface mount PCB re-work.

Wingflinger

Dec 12, 2008 | Garmin GPS Devices

1 Answer

Garmin Nuvi GPS won't acquire satellites


There is a known hardware bug in the Garmin 600 series relating to the detection of the connection of an external antenna. The GPS is supposed to do this automatically and when it detects an external antenna plugged in it switches out the internal antenna. Unfortunately, this circuitry doesn't work correctly in some versions of the unit and sometimes it get's comfused and thinks there is an external antenna connected when there is not. This causes the behavior you describe because, for all practical purposes, there is no antenna connected.

Garmin can fix this and they've been known to fix it even on units that are out of warranty. There is a fix that can be done by someone with the right equipment and know-how which requires disassembling the unit and bypassing the antenna switch. Not to be attempted by anyone not experienced in micro surface mount PCB re-work.

Wingflinger

Dec 04, 2008 | Garmin Nuvi 660 GPS Receiver

1 Answer

Garmin Nuvi 760 loses satelite reception. Tried to reset to factory settings and still having problem.


You may need to buy an additional external GPS receiving antenna. I did for my 750.
Because we love our electronics so tiny, they use an internal antenna. The gold input on the back of it, is for an external antenna available for under $20 from ebay. I used it when I lost reception in NYC, and also in rural areas. The external one has q magnet on it, and you can put it on the roof and have the cord come in your window to the unit (better than arm out window!)

check here - where i bought mine

http://cgi.ebay.com/AMPLIFIED-GPS-ANTENNA-FOR-GARMIN-NUVI-760-750-770-780_W0QQitemZ220265873242QQihZ012QQcategoryZ73348QQtcZphotoQQcmdZViewItemQQ_trksidZp1713.m153.l1262

Enjoy, NGK

Sep 03, 2008 | Garmin GPS Devices

5 Answers

Garmin Nuvi 360 - Acquiring Satellites


Did you check to make sure that it is not in demo mode?
I've seen complaints that the unit is not working, and it was in demo mode.

If everything is set up properly and it still does not work, you will most likely have to send it to Garmin in the US.



Jerry G.

May 28, 2008 | Garmin nuvi 350 GPS Receiver

6 Answers

Unable to acquire satellites


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External antenna - Garmin 25MCX low profile remote GPS antenna

I have been experiencing the same problem many have been having with the Nuvi 6xx and 3xx series giving an error message “Lost satellite reception”.

My problem started mid April 2008 and got progressively worse. I would use my GPS on weekends and it would work perfectly for the first 10 – 30 minutes and then would loose satellite reception, rendering it useless.

I bought my Nuvi 660 when it first came out in October 2006 for just under $700 and is now out of the 1 year warrantee.
I called Garmin Technical Support and we checked my Software version (4.40) and more importantly my GPS SW version (3.00). According to the tech I had on the phone, the GPS SW version was more important then the Software version. It was in fact already updated to 3.00, I did master reset, after master reset, but regardless, nothing helped.

I contemplated what I should do.
Return mine and get a refurbished unit from Garmin for $225 with only a 90 day warrantee?
Buy a new Nuvi 660 for around $300
Buy a new Nuvi 2xx series with fewer features for $200 to $275.
Buy a Megellian GPS?

I read through this forum and came across one person that was told by Garmin “that they are aware of an issue with some Nuvis involving the failure of a diode in the unit that senses whether or not an external antenna is connected.” Apparently this diode failure is caused from the high heat these units experience from being left in a hot car for long periods of time. This would explain why mine would work in the beginning and then die.

So my thinking was, if the diode “thinks” there is an external antenna attached when it isn’t, what would happen if I “did” connect an external antenna?

Garmin recommends the Garmin GA 25MCX low profile remote GPS antenna for the Nuvi 660 and costs $31.49 (not sure about additional costs for tax and shipping)

So I purchased the NEW antenna from a seller on eBay for $25.90 total and IT WORK FLAWLESSLY.

Just to make sure it really was the new external antenna that was working and not the unit coming back to life, I started my 3 hour journey with the external antenna NOT connected. As usual it lost satellite reception in about 15 minutes. I plugged in the GA 25MCX and it immediately connected to the satellites and never lost them.

I repeated the same process coming home and once again, I connecting the external antenna after the unit reported loosing satellite reception, and it worked perfectly.

Conclusion: if your unit is experiencing loosing satellite reception, and is under warrantee, return it ASAP. If it’s out of warrantee, get an external antenna. There are other manufactures of external antennas and all should work as long as it has an MCX connector.

Side Note: This external antenna also worked perfectly on a friend’s Nuvi 350 with the same problem.

I wanted to share this with everyone because I’ve been racking my brain for months over this. I hope this helps.

May 04, 2008 | GPS Devices

2 Answers

Cannot locate sattelite


go to thetips and tricks and try a full factory reset

Sep 08, 2007 | Garmin StreetPilot C330 GPS Receiver

2 Answers

Not receiving satellite signal.


1st check to see if an external antenna will work.

Aug 21, 2007 | Garmin iQue 3600 GPS Receiver

1 Answer

GPS receiver problem


Does it work with an external antenna hooked up? If it does, it could be a problem with the flip-up internal antenna.

Mar 12, 2007 | Garmin iQue 3600 GPS Receiver

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