Whats this port?

Discussion in 'HTC Droid Incredible' started by Threepio, May 19, 2010.

  1. Threepio

    Threepio Member

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    On the backside underneath the back plate, below the battery there is a small rubber plug. The plug pops out revealing some sort of circular port attached to the motherboard of the HTC incredible.

    What is this port for? I am very curious. Heres a pic of where to find the plug.

    [​IMG]
     
  2. Gump47371

    Gump47371 New Member

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    I'm guessing an external antenna. Most phones have these on the back somewhere. Don't have my Incredible yet (just ordered it today, how will I survive?!?) but that would be my guess.
     
  3. Threepio

    Threepio Member

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    Bump anyone else got some thoughts. i agree with Gump, i think its a port for an external antenna. Id like to know how to utilize it though, and maybe fashion some sort of extra antenna that could be covered below the backplate.
     
  4. Backnblack

    Backnblack Premium Member Premium Member

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    Droid has the same and IIRC it's a diagnostic port of some type.
     
  5. Threepio

    Threepio Member

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    I called HTC and they told me its a port for an external antenna. Its technical term is an FME port.
     
  6. INTREPID-NY

    INTREPID-NY New Member

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    If it's an external antenna port, the location makes it useless (unless you drill a hole in the cover).
     
  7. cantare

    cantare New Member

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    Drilling a hole seems like a minimal concession given how flimsy the cover is. You could always get a spare or fit a plug to it. The primary reason I can think of for an antenna hookup would be if you're using the phone as a dedicated 3g modem in some rural area... in which case you could probably just get by leaving the cover off.

    I'm happy to learn that the Incredible has this FME port, since the above basically describes my parents' situation: rural home, no dsl or cable infrastructure, decent VZW 3g signal in the area, but they've got lots of trees. They already tried satellite internet, and it was awful. A tall antenna/amplifier + 3g phone + data plan might finally get them out of the dial-up dark ages.
     
  8. chrisngrod

    chrisngrod New Member

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    Well this is a major bummer considering that I was debating between the HTC Incredible and waiting for the newer Motorola Droid.

    I called Wilson Electronics up to find out more information about using a direct connect amplifier which I already had for my USB Internet dongle (service discontinued). They said they haven't had any luck directly connecting to these FME ports....

    Anyone have experience in using "Direct Connection Dual-Band Amplifier (811201)" and any Droid?

    Thanks in advance.
     
  9. tiohero

    tiohero New Member

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    Links to antennas that will work with the Droid Incredible

    The connector on the back of the phone is an "FME" style connector.

    Here's a link that explains all the various cell phone antenna connectors:


    Connectors used in the cellular and PCS Industry

    Here's a few links to places to get these antenna's.... I use one when I go hiking which allows me to send and receive texts when I get towards the tops of mountains:

    Cell Phone Antennas and Cell Phone Boosters at Wilson Electronics

    Buy.com - Wilson Magnet Mount Cellular Antenna

    http://store.getreception.com/wilson-301113-cellular-antenna-mini-magnet-mount-.html

    wpsantennas.com - The ARC Wireless Freedom Antenna (FR0803R30-FME) Boosts Your Cell Signal and Improves Your Wireless Performance

    Wilson 301146 Cell Phone Cradle with Built-in Antenna (FME) (301146) - Wilson Electronics - 301146 -

    I hope this helps!
     
  10. chrisngrod

    chrisngrod New Member

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    The problem is that not every FME port means that you can use an external antenna or external antenna plus amp.

    I have called Wilson Electronics and they say they haven't had any luck with Droid devices.

    In your experience above was this with a Droid or another phone?

    Thanks...
     
  11. motorbikematt

    motorbikematt New Member

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    Pretty sure this is not an FME connector.

    I am quite certain that this is NOT an FME connector. I have an FME adapter and it does not fit.

    Moreover, a close examination of the port clearly shows that it is not compatible with any of the images you've linked to in the stories above.

    Have you DEMONSTRATED that this is an FME port, or is this just a good guess?? There are actually two of these ports in the Droid:

    http://guide-images.ifixit.net/igi/HKe5iyKbbYaKUXIc.huge

    These same ports are in the back, inside of the Nexus One and are definitely associated with the antenna circuits.

    You can see two here, top right and bottom mid-left of the mainboards on the left side of my twitpic:
    http://twitpic.com/2gxlg2

    and here in a much better image provided by iFixit
    http://guide-images.ifixit.net/igi/iCEdqlUbGG4ZZBv2.huge

    My guess is that these are probe taps for diagnostics and NOT attachment points for connectors.
     
  12. motorbikematt

    motorbikematt New Member

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    I have verified that this is NOT an FME port, but the Hirose MS-156 Subminiature Coaxial Switch. From the SPEC sheet:

    Developed for inspection of high frequency
    circuits used in portable terminals.Verification of
    the circuit performance is accomplished by simply
    inserting the external plug in the board mounted
    receptacle.This action re-directs the circuit from
    normal condition to the plug side. Removing the
    plug restores circuit to its normal condition.
    Read more in the attached SpecSheet or straight from the manufacturer

    Product List
     

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