Question about Garmin GPS 48 GPS Receiver

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Garmin 48 external antenna failure

After many years, the external antenna failed to acquire any signals. The short stubby "portable" antenna works fine. I cleaned the antenna connection to the unit. No difference. I I cut off the original fitting and replaced it with new. No difference. Is the antenna repairable or is a new one necessary. If new is necessary, where can one for such and older gps be found? Thank you...David

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  • davidofglory Nov 17, 2008

    Perfecto! I checked the site mentioned, and found one of several options that is said to be compatible with the 48, including the hardware for rail mounting. Cool!

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Check the cords of the antenna and make sure they are connected properly to the unit because a cord may have came apart in the years of it's use. You could get a new antenna, but you can buy a new GPS that is better than the one you have for about the same price as a new external antenna.

Posted on Nov 17, 2008

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Antenna's are not repairable so you need to purchase a new one. I have already check for a compatible antenna for your Garmin 48. Please visit this site: http://www.gps-home.com/gps-products/BNC-M.aspx

Posted on Nov 17, 2008

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Usuallty it is repairable, as there is probably a broken contact to the iextenal antenna.

The antenna wirings must be built again by taking apart the antenna and checking the soldering.

Often is not worth the job, as an external antenna repalacements are not too expensive.

Posted on Nov 17, 2008

  • Ginko
    Ginko Nov 17, 2008

    The price for an external antenna is about $50/$80, depending if it is passive or active (here is an uk seller for example).
    You can also buy from Garmin shop here, better to call them as it difficult to locate the items.

    The alternative is taking apart the antenna cable , and soldering a new antenna cable that you buy at any circuit shop for $10 or so.


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