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  1. Just a few statistics from my receiver near...

    Just a few statistics from my receiver near Frankfurt, germany after running ModesDeco2 26 days uninterruptedly:
    Airborn position reports with pressure height: 50.270.000 (quite the same with...
  2. Things go easy if you simply search yourself. ...

    Things go easy if you simply search yourself. ACARS frequencies lie within the general air communication band 118 - 137 MHz.
    http://www.acarsd.org/ACARS_frequencies.html
    Any air communication...
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    In...

    In http://adsb-decode-guide.readthedocs.org/en/latest/introduction.html#ads-b clearly is desribed that ADS-B outputs both pressure altitude as well as GPS "Height above ellipsoid" HAE. ADS-B...
  4. Sleeve antenna

    1 In case you are willing to increase your targeted antenna segment length 10 fold, you might have a chance. The length of both the active elments should be less than 69mm.
    2 The design you are...
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    OK, new posts on old threads always are a trap on...

    OK, new posts on old threads always are a trap on the way. Sometimes we step in. Yes I agree, the problem itself is solved meanwhile.
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    It is months ago, this happend. And it is more...

    It is months ago, this happend. And it is more likely a european (at least a german) understanding of data privacy causing the change than FlarmNet having changed use conditions on their database. ...
  7. Try this one:...

    Try this one:
    http://www.ebay.com/itm/Base-antenna-airband-108-137mhz-lambda-1-4-NOAA-reception-SO239-connector-/291680308721?hash=item43e9804df1:g:-nEAAOSwd0BV5EO-
    or this one:...
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    The truth about lightning strike

    Short but comprehensive. Thank you very much for posting.
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    If... the green lines want show the flight...

    If...
    the green lines want show the flight track, this was a severe reception problem, when receiving GPS signals on the ground. In-air it might be a similar issue. In case, positions jump that...
  10. Antenna in-line amp

    I doubt, the amp wil give you any true advantage, except 18dB gain under discussion if you will succeed feeding this device. The product description points out severe contradictions: "SATELLITE...
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    By far nothing compares to CB when it comes to...

    By far nothing compares to CB when it comes to wonders driven by myths. You won't get any improvement by whatever phased antenna array unless you place one of it beyond the conifer. If you can't go...
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    If a lightning chose to strike your antenna it...

    If a lightning chose to strike your antenna it was not that important whether you fed your system via PoE or whatever else. More likely, everything will get fried, no matter whether attached...
  13. Because before you have to take care about 3mm of...

    Because before you have to take care about 3mm of antenna length you better should ask from where the λ/4 should be measured. As you might have noticed, the length from the can to the antenna tip is...
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    Back to rangler's question. How to use more than...

    Back to rangler's question. How to use more than one dongle on just one Pi. Any idea?
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    Since ADS-B radiation behaves like light, it is a...

    Since ADS-B radiation behaves like light, it is a matter of "geographical range of visibility", mainly due to earth curvature....
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    geographical range of visibility

    Since ADS-B radiation behaves like light, it is a matter of "geographical range of visibility", mainly due to earth curvature....
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    I cannot recommend any antenna multiplexer. ...

    I cannot recommend any antenna multiplexer. Further, I would call that antenna diversity, with a diversity controller choosing the best antenna. In comparison, feeding all four antenna together in...
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    I am afraid you will spend quite a lot of work...

    I am afraid you will spend quite a lot of work and money earning rubbish. In case, you will involve big dishes - whatever big means - you will get four antennas with an aperture of around 20 degrees...
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    Hi PlaneTrack, rather than answering your...

    Hi PlaneTrack,

    rather than answering your questions I could speak about my thoughts on plane tracking. But first let me try answers.

    Tracking popular: At least there are two groups of...
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    :-) , nothing except for this is a flightradar24...

    :-) , nothing except for this is a flightradar24 forum :-)
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    Yes SpaxmoidJAm, thank you, that's one of the...

    Yes SpaxmoidJAm, thank you, that's one of the good references I cannot post here.

    @StupidDoes
    Please pay extra attention to section "Configuring Linux for PPS on the GPIO port" because recent...
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    (For the last time,) please be aware, the GPS...

    (For the last time,) please be aware, the GPS rceiver will give no advantage for an ADS-B app. It is quite some kind of an effort to implement the PPS improvement for system clock precision.
    The...
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    GPS Receiver / defeating funny forum software

    Recommending is somehow difficult, because I did it once. Which level of experience do you expect from such a person? To understand this statement read: "could be link" (this phrase denotes a link,...
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    Sorry, newbies on this forum are not allowed to...

    Sorry, newbies on this forum are not allowed to post links.
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    Yes, there is a pulse per second feature built in...

    Yes, there is a pulse per second feature built in the ntp, driver 22. If you use this with a GPS derived PPS signal, connected to one GPIO of the Raspberry, its system clock will sync much more...
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