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  • ScrappyLaptop
    replied
    T-KDVO9
    San Francisco Bay Area

    Receiver:
    Nooelec NESDR SMArt v4 SDR
    https://www.nooelec.com/store/sdr/nesdr-smart-sdr.html

    Antenna:
    https://www.nooelec.com/store/sdr/sd...-5dbi-sma.html

    Filter:
    FlightAware ADS-B Dual 978 MHz + 1090 MHz Band-Pass SMA Filter
    https://www.amazon.com/ADS-B-Dual-10.../dp/B010GBQXK8

    Cables/Connectors:
    (none)

    Pigtail/step down adapters:
    (none)

    Software:
    DietPi current + install_fr24_rpi.sh script, running on a R-Pi 3 model B, WiFi to home network

    Comments:
    I noticed the Nooelec SDR runs really hot & with a little experimentation found I could nearly double the range by adding heat sinks (better signal:noise maybe?). So I mounted it to a couple pieces of scrap aluminum with a Arctic thermal tape at the interfaces. The R-Pi is in an aluminum case designed to act as a heat sink for the three main chips (more thermal tape), stuck to the frame/large radio heat sink & insulated from it using 3M 5952 tape. The triangular bracket hanging off the bottom is just a counterweight to keep the whole thing vertical. The white cord runs to a USB psu plugged into a nearby outlet for the garage door opener.

    The whole assembly is mounted in the garage rafters after I found almost no loss in max distance compared to 5 feet above the garage roof peak. This should be convenient for trying different antennas should I catch that bug.

    The system can currently follow flights as far North as Corning, as far South as Madera and as far East as far as the Sierra Nevadas. So, about 150 miles at or above 28,000 ft.

    The view to the West is blocked by the coastal hills behind the house, so the only detections above the coast that's maybe 20 miles away are above 14,000 feet or so. Mostly above the SFO traffic, heading down to LAX & elsewhere.


    20200911_125030.png
    Last edited by ScrappyLaptop; 2020-09-22, 20:42. Reason: Correction of the detection altitude to the West

    Leave a comment:


  • NeoDude
    replied
    Just moved my antennas from the loft to my roof...

    Receiver(s)

    rPi 3
    RTL-SDR v3
    RTL-SDR Triple Filtered LNA

    Antenna(s)

    FlightAware Antenna

    Cables/Connectors

    Westflex 103
    Compression fittings both ends, 1x N-Type, 1x SMA.

    Software

    PiAware Image + 360radar + FR24

    Outside...

    FA%20Out.jpg

    Inside...

    FA%20In.jpg

    Live Feed...

    http://radar.clanlawrence.co.uk
    Last edited by NeoDude; 2020-09-17, 20:18.

    Leave a comment:


  • MillerBerlin
    replied
    Receiver: FlightAware Pro Stick Plus on RaspberryPi 3B via USB extension
    Antenna: Jetvision A3 ADS-B
    Filter: 1090 MHz Filter from FlightAware, the dark blue version.
    Cable: 5 meters Ecoflex 10 Plus with N Type male - SMA male connectors
    Software: noobs with fr24 rpi

    All mounted Outdoors on the balkony, connected via WIFI to the homenetwork and internet.
    The other Raspberry in the cabinet is only for HF-SDR.

    I know the ProStickPlus has a integrated filter, but I have two big cellular antennas in the neighborhood. The extra filter brings a lot.

    The SpeakerCable is for extra grounding.


    20200731_203652.jpg
    20200731_203756.jpg
    20200731_203834.jpg
    Unbenannt.JPG


    Range rings in 50km distance steps. Outer Ring is at 450km. The edge in range in south/west is the shadow of the house.

    virtualradar.JPG
    Last edited by MillerBerlin; 2020-08-26, 09:50.

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  • OLOT
    replied
    I have built an autonomous antenna with 70 hours autonomy very simple to cover events

    Leave a comment:


  • lgad1
    replied
    Originally posted by markend View Post
    [*]homebrew spider antenna (find details here)
    Amazing antenna setup! Thank you for sharing this 3d model

    Leave a comment:


  • markend
    replied
    Hi there,
    After more than a year of feeding now I'd like to show my setup to you.

    Hardware:
    • Raspberry Pi 3 Model A+
    • NooElec Nano 3
    • filter + LNA
    • homebrew spider antenna (find details here)
    • RG174 cable

    Software:
    Last edited by markend; 2020-06-04, 19:26. Reason: typo

    Leave a comment:


  • magnum
    replied
    Originally posted by abcd567 View Post
    magnum:
    Amazing that you could achieve your maximum range with such simple setup. Did you try placing the mag-mount antenna over a metal plate or food can?
    Yes, i put it on a metal cookie box where we store our christmas cookies.
    So around Christmas time i have to find a workaround :-)

    Yesterday i opened the window and placed the antenna for an hour outside without seeing an improvement.
    Looks like our flat as paper thin walls......

    However i will try some of the DIY antennas later, just to improve my skills

    Leave a comment:


  • abcd567
    replied
    magnum:
    Amazing that you could achieve your maximum range with such simple setup. Did you try placing the mag-mount antenna over a metal plate or food can?

    Leave a comment:


  • magnum
    replied
    Originally posted by Chucker View Post
    Understood. Since a scan saw a ton of signal activity around 870MHZ (probably from a tower less than 400m away) I have a FlightAware blue stick and filter on the way to help correct that. Then once I have optimized for the bedroom window, I'll try the attic first. If no significant improvement, then we'll try the chimney mount.
    I bought recently a bundle with a Raspberry, the (blue) FA Pro Plus stick and a cheap indoor antenna, after removing the tip and replace it with a wire in the correct length, my signal and my range went up by 25%.
    Looks ugly, but it works. For the range see my image some posts earlier. I am satisfied so far based on my location.

    copper-antenna.jpg

    Range-Geo-Vergleich.jpg

    Leave a comment:


  • Chucker
    replied
    Understood. Since a scan saw a ton of signal activity around 870MHZ (probably from a tower less than 400m away) I have a FlightAware blue stick and filter on the way to help correct that. Then once I have optimized for the bedroom window, I'll try the attic first. If no significant improvement, then we'll try the chimney mount.

    Leave a comment:


  • wiedehopf
    replied
    The NooElec antennas are very, very bad.

    Just chop the whip antenna or put on a copper wire of appropriate size after unscrewing the old whip.

    Leave a comment:


  • Chucker
    replied
    Hello! South of Lake Ontario, near KROC. Just started a few days ago, running the following -

    Raspberry Pi 3 B
    32 GB SD card that was pre-loaded with NOOBS when I bought it two years ago
    NooElec NESDR Mini with their stock antenna (not chopped at this time), stuck to the top of a soup can
    Also picked up the NooElec Discovery 5dBi bundle, which has a 1090MHz SMA antenna, a 978MHz SMA antenna, and 2 male MCX to female SMA pigtail cables, but haven't used yet

    Farthest I have picked is 49nm to the SW, with much restricted to the NE because of placement in western facing upstairs window. Pondering moving the Pi to the attic for higher antenna mounting either inside or on the chimney.

    Leave a comment:


  • magnum
    replied
    Originally posted by abcd567 View Post
    magnum:
    Wire 42mm is too short. Should be 52mm
    To improve performance, place mag-mount antenna on a metal plate or a food can. Try to place antenna near a window.

    [ATTACH=CONFIG]10967[/ATTACH] [ATTACH=CONFIG]10968[/ATTACH] [ATTACH=CONFIG]10969[/ATTACH]
    Sorry, this was a typo, i've put a 52 mm wire on it. For this i took one of your tutorials

    The antenna is alreayd on a metal plate (cookie box, unfortunately already empty) and i have identified the best place in my home office. Any other position makes the signal more worse
    Next project is a DIY antenna (probably outdoor)

    Which one do you think gives the best performance, compared to my current setup? I'm thinking about a spider

    I have two "blind spots" to the north and south based on the environment, these i want to eliminate with the new antenna.
    blind spots.jpg

    Is there a realtime Linux console tool available which gives me the current signal strength of the antenna instead of placing - waiting - placing - waiting......
    Last edited by magnum; 2019-07-28, 04:53.

    Leave a comment:


  • abcd567
    replied
    magnum:
    Wire 42mm is too short. Should be 52mm
    To improve performance, place mag-mount antenna on a metal plate or a food can. Try to place antenna near a window.

    Optimized-Whip-Steel-Tie-Wire.jpg Optimized-Whip-on-Plate-1.jpg Mag-mountWhip on Food Can and Near Window-1.jpg

    Leave a comment:


  • magnum
    replied
    I started feeding a week ago.
    For this i bought a bundle which was provided by a german Raspberry shop

    Content
    Raspberry Pi 3 B
    Flightaware pro plus Stick (the blue one)
    a cheap indoor antenna with magnetic socket
    16 GB SD card

    No idea if it will work, i simply installed the Flightaware image and was surprised that even in the living room the first aircrafts were detected. I then installed FR24 application and started feeding there aas well.
    After reading a lot i removed the antenna from the socket screw and replaced it with a 42 mm copper wire, so in reality i made the cheap antenna even cheaper

    I then placed the equipment in my home office under the roof indoor. After some try&error attempts i found the best antenna position indoor.
    Comparing the max possible range based on the geographic location (heywhatsthere) and the real world tests after this week i can say that i'm getting close to the maximum. Next try is a DIY outdoor antenna.

    This is the output of heywhatsthere and the last days of coverage (to make it easy i grabbed it from RB24 where i also feed since then). I cannot complain, especially in the area of Frankfurt there are lots of aircrafts

    Range-Geo-Vergleich.jpg

    Leave a comment:

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