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  #1 (permalink)  
Old 06-21-2008, 11:55 PM
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Default External antenna for Garmin Nuvi 350 questions

I have a Garmin Nuvi 350 and lately I dont think the internal antenna is cutting it as far as signal acquisition. Yesterday, it had a problem and started asking me question such as if the current date is correct, if I have driven 100+ miles from my last destination, etc. Finally, it found a signal.

Would an external antenna help me?

Here is Garmin's antenna for the Nuvi 350
https://buy.garmin.com/shop/shop.do?pID=1326#

I want to know if this will help me before I buy anything. I am not impressed with a magnetic mount at all as they scratch surfaces so I may find an alternative.


Does Antenex make a good one? Can anyone provide a link?


Thanks!
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Old 06-22-2008, 12:05 AM
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That signal problem seems odd. I was getting a full meter by the window inside the house with the 200W.

But, I would bet that antenna would provide rock solid results. It looks like the same type that's used on the covert GPS tracking units and those things nav UNDER a vehicle.
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Old 06-22-2008, 7:17 AM
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Default Vehicle window tint?

External antenna can be helpful. Not sure if this is a new problem for your unit that has been working well or used in a different vehicle. Point is that some vehicles have a window treatment known to significantly reduce GPS signal. In that case the external antenna is a very good solution.

Mike
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Old 06-22-2008, 10:00 AM
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An external antenna can help but not sure on which antenna is best. Personally I have had no problems with the 350 (personally don't own one but my dad does and I have borrowed it on several occasions). The internal antenna works great unless you are in a parking garage or something of that nature (which then an external antenna wouldn't help much either in that enviroment).
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Old 06-22-2008, 8:04 PM
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Does anyone have a link for something like the antenna made by Antenex? I will take a permanent mount (since the 3/4" hole is there) or a trunk lip mount of some sort.

I have asked Antenex and they cant tell me for certain.
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Old 06-22-2008, 10:38 PM
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I use an NMO mount antenna for my C330. I got it from eBay. And it works great...
http://cgi.ebay.com/GPS-NMO-MOBILE-A...742.m153.l1262

http://n9mxq.ham-radio-op.net/images/100_1080.jpg

You'll need the proper coax adapter.. But I love mine
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Last edited by n9mxq; 06-22-2008 at 10:39 PM.. Reason: added picture link
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Old 06-22-2008, 11:38 PM
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If your GPS is still under warranty, I would send it to Garmin, It sounds like it is malfunctioning.

Garmin will transfer all your waypoints/locations. When I sent mine in, I only sent the GPS, and they sent me a new one, so I ended up with an extra cable and the accessories.

If you end up ordering a ext. antenna, I would order it from amazon, because of their no hassel return policy.
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Old 06-23-2008, 12:01 AM
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www.tessco.com

Look for GPS antennas here:
http://www.tessco.com/products/displ...&subgroupId=60

They have NMO mounts, 3/4" mounts, whatever you want. At least you can see what's available, even if you don't order from them.
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Old 06-25-2008, 11:09 PM
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I asked Garmin for specifics on the antenna (such as the coax cable and such) and they wouldnt give it.
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Old 06-25-2008, 11:21 PM
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I saw a Garmin external antenna at Best Buy this weekend. It looks like it's RG-174. I would bet that it is and they are running power up the coax to a preamp right in the antenna to overcome the loss in the cable.

Quote:
Originally Posted by CVPI4Ever View Post
I asked Garmin for specifics on the antenna (such as the coax cable and such) and they wouldnt give it.
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Old 06-26-2008, 11:20 AM
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Quote:
Originally Posted by CVPI4Ever View Post
I asked Garmin for specifics on the antenna (such as the coax cable and such) and they wouldnt give it.
My NMO mount uses the RG-58 that was attached to it. It's the connector on the end you need to adapt.

I went from PL-259 on the coax, to a SO239/BNC to a bnc-mcx adapter from eBay. Works fine.

GPS locks in about 20 seconds every time.
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Last edited by n9mxq; 06-27-2008 at 8:40 AM.. Reason: dunno why I typed SMA... was thinkin radio I guess....
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Old 06-26-2008, 11:58 PM
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Often it's RG-174, and an MCX or MMCX connector.
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Old 08-04-2008, 11:51 PM
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I went to one of our radio vendors (BearCom) and he quoted me like this:

$46.50 - Larsen GPS antenna, black
$6.10 - MCX Connector
$45.00 - to crimp MCX connector to coax cable

Total - $104.68


I was really peeved at $45.00 to crimp a connector. Thats what I hate about dealing with BearCom. My other radio vendor could not help me at all.

I know the Larsen is black, but is there a white one with an MCX connector?
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Old 08-05-2008, 12:13 AM
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Quote:
Originally Posted by CVPI4Ever View Post
I went to one of our radio vendors (BearCom) and he quoted me like this:

$46.50 - Larsen GPS antenna, black
$6.10 - MCX Connector
$45.00 - to crimp MCX connector to coax cable

Total - $104.68


I was really peeved at $45.00 to crimp a connector. Thats what I hate about dealing with BearCom. My other radio vendor could not help me at all.

I know the Larsen is black, but is there a white one with an MCX connector?
That is crazy on the crimp job. Something that would take little to no time to do and they charge $45.00. I think I am in the wrong business.
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  #15 (permalink)  
Old 08-05-2008, 7:55 AM
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Isnt it outrageous?

Anyone know where I can get a white GPS "puck" antenna with an MCX connector?
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Old 08-05-2008, 8:01 AM
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The device is *NOT* malfunctioning. The questions it is asking are common for when a GPS can't find it's required 3 satellites. There is no reason to send it back.

However, if you are getting this often, an external antenna would be good.
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Old 08-05-2008, 12:27 PM
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Quote:
Originally Posted by bezking View Post
The device is *NOT* malfunctioning. The questions it is asking are common for when a GPS can't find it's required 3 satellites. There is no reason to send it back.

However, if you are getting this often, an external antenna would be good.
?

I dont know what your experience is with Garmin GPS's?

But having had 2 Garmins, and If he has to drive 100+ miles for his GPS to lock on to 3 Satellites, I dont know how you can say it is not malfuntioning?

I am able to hit 3 Sat.'s with my Garmin 2720 inside my house, in the woods with thick foliage, and in a multitude of different vehicles including commerical.

I also have 2 friends that have Nuvi's and they have not had any signal problems.

With the info provided, and if the unit is under warranty, I still say spend 10 bucks and ship it to Garmin and have it check out, he could of done this and had it back by now.
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Old 08-05-2008, 12:52 PM
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There are probably better Forums to ask your GPS related questions such as:

http://www.gpsreview.net/forums/
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Old 08-06-2008, 1:26 AM
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Quote:
Originally Posted by CVPI4Ever View Post
I went to one of our radio vendors (BearCom) and he quoted me like this:

$46.50 - Larsen GPS antenna, black
$6.10 - MCX Connector
$45.00 - to crimp MCX connector to coax cable

Total - $104.68


I was really peeved at $45.00 to crimp a connector. Thats what I hate about dealing with BearCom. My other radio vendor could not help me at all.

I know the Larsen is black, but is there a white one with an MCX connector?
Not to beat down my Buddy that works at BearCom... but geesh! $45....

I still prefer my setup.. if you were closer we could meet up and plug your GPS into my setup and you could see how well it works.. And for a lot less than $104.68...
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  #20 (permalink)  
Old 08-06-2008, 10:38 AM
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There are tons of them on eBay for as little as $20.00 and up! It's not a complex device, very simple technology, so most any of them should work just fine.
http://search.ebay.com/search/search...rmin&category0=
 

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