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Thread: Newbie needs help to increase range

  1. #1
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    Newbie needs help to increase range

    Hello,

    I've managed to successfully set up a receiver consisting in a raspberry pi 3 connected to an inexpensive DVB-T usb stick with the following specs: DVB-T+DAB+FM+RTL2832U R820T2 & SDR. Using the small antenna that came with the DVB-T I can detect about 800 aircraft per day within a maximun range of 45 nm. I live on a 5th floor in a densely populated city, with no access to the roof, just a small balcony. I know these are not ideal conditions, but I would like to increase the range of detection, if possible.

    What would be the best shot?

    1) Use the home TV/FM antenna outlet. The building contains a community antenna on the rooftop, and I've tried to plug the stick to the antenna outlet on the wall. Unfortunately, I haven't been able to get any signal so far. Maybe the distance to the antenna on the rooftop is too long, maybe it has some sort of filter. Would a signal booster help in this case? Should I use the TV or FM connector on the outlet, if it matters? Is it worth at all pursuing this option?

    2) Remain indoors, as placing the small antenna in the balcony vs indoors makes no difference as far as I can tell. In this case should I try to invest in a 26'' FlightAware 1090Mhz ADS-B antenna + blue SMA fiter + orange FlightAware stick? I live near a huge cell phone tower. But maybe I'm lucky and get a more decent range with this option, despite all the limitations?

    Thanks in advance
    Last edited by paume; 2018-07-10 at 17:57.

  2. #2
    Captain abcd567's Avatar
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    Inside my apartment, near a large window



    .

    .

    Last edited by abcd567; 2018-07-11 at 01:46.

  3. #3
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    Run a scan to see how much noise you have in you area before you go and purchase any more equipment. If you have heaps of noise then you can decide if you need a filter, a dongle with lna etc.

  4. #4
    Captain abcd567's Avatar
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    Quote Originally Posted by Coxy View Post
    Run a scan to see how much noise you have in you area
    This is a good advise, but you forgot to tell him how to run a scan.
    Last edited by abcd567; 2018-07-11 at 05:05.

  5. #5
    Captain abcd567's Avatar
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    Scan Cell and other RF signals in your area using method given in this thread. Based on scan results decide if you need a filter:

    Do I need a Filter? - Find RF Signals In Area

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    Quote Originally Posted by abcd567 View Post
    This is a good advise, but you forgot to tell him how to run a scan.
    Thanks abcd567 i was going to attached link later after i found it. I know where the link is on another site haha
    Last edited by Coxy; 2018-07-13 at 07:15.

  7. #7
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    Thanks for the link, I'll defintely check the noise in the area before purchasing any filter. As for the type of antenna vs range, and assuming I place the equipment indoors, are there chances I get the same level using the cookie box setup, which is what I have now (minus the lid) and the one seen in the picture below, which seems rather more complex? Does it all depend on the location? Any word on attempting to use the standard rooftop TV antenna in combination with some booster because of the length of the cable, if that makes any sense? Thanks.

  8. #8
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    TBH the best Ant i have used so far is the Franklin spider EASY ANTENNA # 3 : QUICK SPIDER as detailed by abcd567 https://forum.flightradar24.com/thre...light=franklin

    it has a great gound plane and take no time to make. Currently beats my FA Ant hands down.
    Last edited by Coxy; 2018-07-13 at 07:16.

  9. #9
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    Quote Originally Posted by abcd567 View Post
    Inside my apartment, near a large window
    @abcd567 Hi, I have the DVB-T type antenna. I clipped it to it's propper lenght having a significant boost in performance. My doubt come from the can below. Does it affect the performance?

    Would a home made spider antenna improve the performance? What do the spider "legs" actually do?

  10. #10
    Flight attendant
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    the one seen in the picture below, which seems rather more complex
    Whilst some readers might be stunned by abcd567's complex/technical installation, I'm more concerned about his diet of cookies and coke ...........

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