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Thread: FAA's ADS - B Installation Guidance

  1. #1
    First officer 1090 MHz's Avatar
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    FAA's ADS - B Installation Guidance

    http://www.aea.net/Training/courses/...20Guidance.pdf

    I've been trying to find out what antenna on the aircraft is used for the ADS-B Out. From what this says, the same S Mode transponder antenna can be used. It also recommends the use of 2 antenna, one on top and one on the bottom of the aircraft. The top mounted antenna is not mandatory, however in my opinion it should be, if they have plans to track aircraft by ADS-B satellites.

  2. #2
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    Look for the shark fins half way down the body top and bottom. Thats usually them

  3. #3
    Passenger
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    One of these works just fine:

    http://www.rami.com/product-view.php?pid=164

    Or you could spent more and install one of these:

    http://www.rami.com/product-view.php?pid=24

  4. #4
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    Quote Originally Posted by t-kclt2 View Post
    One of these works just fine:

    http://www.rami.com/product-view.php?pid=164
    Hmm, rounded end - less likely to be an electrostatic stress point - lighting attractor ... have to put one on the next antenna.

  5. #5
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    Two questions:
    1. How do the FAA track planes mid ocean (satellite, buoys, other)?
    2. Why does the FAA data plot 'avoid' the t- plots from Ireland (do the FAA not capture the data, do they not share the data or does FR24 avoid plotting the FAA data)?

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  7. #7
    Passenger KD4MOJ's Avatar
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    Quote Originally Posted by peterhr View Post
    Two questions:
    1. How do the FAA track planes mid ocean (satellite, buoys, other)?
    High Frequency Data Link (HFDL) is one method... I have a program on my computer called PC-HFDL that captures the packets from my HF rig and displays them via google earth. There are programs such as Plane Plotter also displays this info. Instead of using 1090, there are various frequencies used between 5Mhz up to 28Mhz or thereabouts.

    I'll see if I can make a short video of it in action for you.

    ...DOUG
    KD4MOJ
    Last edited by KD4MOJ; 2013-11-01 at 16:26.

  8. #8
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    Quote Originally Posted by KD4MOJ View Post
    High Frequency Data Link (HFDL) is one method... I have a program on my computer called PC-HFDL that captures the packets from my HF rig and displays them via google earth. There are programs such as Plane Plotter also displays this info. Instead of using 1090, there are various frequencies used between 5Mhz up to 28Mhz or thereabouts.
    I wonder if we can capture that for FR24 - using an R820T dongle

  9. #9
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    Quote Originally Posted by peterhr View Post
    I wonder if we can capture that for FR24 - using an R820T dongle
    peterhr

    The R820T dongles usually have a low frequency limit about 54~60 Mhz, for receiving signals below that limit you need a up converter like this:

    http://www.nooelec.com/store/softwar...ned-radio.html

    http://www.rtl-sdr.com/tag/upconverter/

    http://blog.kf7lze.net/2012/09/14/ro...erter-choices/

    Note:
    I'm not related to any of those providers

  10. #10
    First officer nzradar's Avatar
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    Quote Originally Posted by peterhr View Post
    Two questions:
    1. How do the FAA track planes mid ocean (satellite, buoys, other)?
    Most of the 'tracking' is done by the respective Oceanic Control Areas (OCA) and not the FAA itself, for example trans Atlantic traffic is controlled by Gander, New York, Santa Maria and Shanwick. Depending on the aircraft's navigational fit reporting of positions outside of radar coverage include waypoint reporting (voice traffic to the OCA) and CPDLC (Controller to Pilot DataLink Control). The former relies on procedural voice reporting at specified waypoints along the planned or advised route. The latter is pretty much the same except the reporting is done by the aircrafts FANS system via a satellite datalink using Inmarsat channels. Changes requested by the crew and replies or control directives by the OCA are done via computer thus relieving the OCA or contracted radio operators of additional workloads in monitoring or relaying messages.
    Michael
    Palmerston North,
    New Zealand
    ex-FR24 Feeder

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