Announcement

Collapse
No announcement yet.

Show / Describe your FR24 hardware

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • NetRanger
    replied
    Wow,what a great idea,might have a crack at one like this myself.

    Leave a comment:


  • T-EDSB36
    replied
    Yesterday's report, due to limit of 5 pictures/post:

    2017-06-12.jpg


    Waterfall-Diagram of the signal at 1090 MHz, that reaches the receiver:

    19126238_1442987695762748_1509905699_o.jpg
    Last edited by T-EDSB36; 2017-06-13, 19:33.

    Leave a comment:


  • T-EDSB36
    replied
    Presentation of my ADS-B-Reception setup after one year of Feeding to FR24

    Dear Flightradar-Feeders and ADS-B-Fanatics,

    according to my FR24-Statistics page, I have been First seen online 2016-06-13 09:49:20

    For this 1-year-anniversary I am very proud to present my actual hardware for the reception and processing of ADS-B-Signals. Please feel free to comment about its pros and cons.

    First of all, I wasted nearly a whole year fumbling around with different USB-Cables connecting the DVB-T-Stick and 5V-Power-Adaptors for the Raspberry Pi Using the wrong cable or a poor power supply will result in dump1090 crashing, since there is not enough voltage left for the stick. Finally after about 1 year the whole stuff is running stable to my satisfaction.

    Actually, I am using a homebrew 8-elements-collinear-antenna made of coaxial-cable hauled from an abandoned satellite-dish-installation. The antenna resides in a 16mm-PVC-tube and is attached near the roof of my flat in Karlsruhe, Germany (my landlord is cool with that and the these powerlines seem closer as they are ). Height above ground is about 10 meters:

    20170611_105846.jpg

    There is a little sight-obstruction to eastern directions by the roof, but I have no better possibility for the installation. (maybe one day, a biquad and another receiver will add more coverage to that orientation). The antenna is designed like the following schematic:

    Bild9-32.gif

    After more than 5 meters (or about 20 wavelengths) of the same coaxial-cable the antenna is made of, the signals reach the receiver, which is housed in an empty PSU-case:

    20170611_105923.jpg

    As one can see, both the 230V-inlet connector for non-heating apparatus and the cooling-fan (running at 5V now) are still in use. please take a closer look at the unplugged device:

    20170610_140611.jpg

    The ethernet-connector sits at the former place of the 110/220V-switch (had to do a little rasping, though). Fun fact: the washers and the nuts holding the connector in place have been hauled from an old tube radio The next and final picture of my setup shows the inner life:

    20170610_140918.jpg

    It is featuring a NooElec R820T2-Stick connected to a Raspberry Pi B running a minibian installation with dump1090-mutability. The power-supply is connected via terminal-strips to the power-switch of the PSU (hidden under that red cluster of duct tape). It was still a little creepy doing that wiring, but the metal-case is grounded, so what?

    I stated a little decrease in processed signals since I switched to the new case setup compared to the flying construction I had used before. see the following posting for yesterday's reception report... I am blaming the high-frequency interference inside the case or the newly installed BNC-SMA-pigtail-cable (the MCX-connector at the stick was replaced by SMA for contact reasons, I recommend doing that urgently) therfor. My next projects for improving range and signal strength are using entirely 50-Ohms for antenna, cable and connectors (actually, there are also belling-lee plugs used ) and optionally some kind of Low Noise Amplifier+Filter.

    Since I cannot post URLs yet and I don't wanna get my Raspberry to be DDOS'ed, please PN me for a temporary link to the http-server provided by dump1090, if wanted.

    Kind regards from Germany,
    Michael
    Last edited by T-EDSB36; 2017-06-14, 20:27.

    Leave a comment:


  • abcd567
    replied
    @KB9LFZ:

    Very interesting. Can you please give some details about your DIY filter? Photos and sketches will be added help.

    Leave a comment:


  • KB9LFZ
    replied
    F-KCSG2

    [RECEIVER]
    FR24 supplied receiver

    [ANTENNA]
    FR24 supplied antenna, up ~20ft

    [Cables/Connectors]
    FR24 supplied RF cable from the antenna to a self built RF filter, then six inch jumper from the filter to the FR24 receiver

    [COMMENTS]
    The site the ADS-B receiver is a commercial FM music broadcast site with several kilowatt transmitters. Line of Site distance is approx. 25 miles in any given direction from this site.

    There are several cellular carriers within rock throwing distance, and a few 940MHz transmitters, with their antennas an arm's length away.

    Originally, the best range I could get was about 88nm. Having some experience in this field, I decided to add an inline RF filter before the receiver. The receivers in any of the DVB-T dongles, or SDR have very poor performing filters, if they have any at all.

    This means, that even in a neighborhood, or any urbanized area, unknown amounts of RF are preventing you receiver from getting best performance.


    I sought to purchase a already filter, like the ones from Flightaware, and some of the Chinese counterfeits. However, most of these are have a band pass well over 100MHz, meaning, they do not block 800/900MHz cellular, and 940MHz transmissions.

    The one I built drops the 940MHz stuff by 50dB, and attenuation gets higher as you get further away in frequency, be it higher or lower.



    Because of my filter, the range went from 88nm to 265nm.

    Leave a comment:


  • Jarod
    replied
    Outdated. Stuff changed, no photo's yet.
    Last edited by Jarod; 2017-06-25, 10:43.

    Leave a comment:


  • DemonLee
    replied
    Hi Guys, thought I would upload a few images of the new antenna mast and set-up for the standard FR24 kit supplied to me:

    Img_8312.jpg
    New Antenna Mast (Sectional) with a 3m 2" mast inserted at the top to give height another 1m

    Img_8314.jpg
    IP55 Boxes with 2x Power Sources, I box with FR24 Decoder, the other box is spare to insert a RASPi or Beast with an Antenna at differing height.

    Img_8315.jpg
    New Coverage area, well extended now East/South East.
    Rings are Statute Miles not Nautical Miles.

    Leave a comment:


  • Iemand91
    replied
    Receiver: Raspberry Pi 3 + cheapo DVB-T stick (When the FA Pro Stick is back in stock in Europe I will buy/use that in combination with the FA filter I already have)
    Antenna: FlightAware antenna
    Cables/Connectors: 17 meters of KOKA 9 TS (total loss in this cable alone should be around 1.25 dB.)
    Pigtail/step down adaptors: MCX - F pigtail, short piece of flat coaxial cable and F-N adapter for the antenna.
    Software: PiAware 3.1.0
    Comments: The KOKA cable runs underneath the rooftiles and above the insulation. Antenna is placed at about 7 meters above ground.
    The flat coax is needed (no way of drilling holes through exterior walls or anything like that) which runs between window and window frame.
    This short piece of coax does have a negative effect on the results though...
    I'm feeding Flightradar24, FlightAware and Planefinder.


    ADS-B RPi3 PiAware 3 by Iemand91, on Flickr

    FlightAware antenna by Iemand91, on Flickr

    Results:


    FA antenna Planefinder range through flat coax by Iemand91, on Flickr

    ADS-B range rings through flat coax by Iemand91, on Flickr

    Compare that without the (needed) flat coax:


    FA antenna Planefinder range directly by Iemand91, on Flickr

    ADS-B range rings directly by Iemand91, on Flickr
    Last edited by Iemand91; 2016-10-01, 19:50.

    Leave a comment:


  • dudesjp
    replied
    Originally posted by GitseBase View Post
    Looks good!
    Care to give some more details about your setup? (height, range .etc..etc..)

    Does the FA feeder come with an LCD?
    Hey, thank you!
    No, no problem! Well, the first one is a Pi 2 with a normal isdb-t stick and a cheap antenna from AliExpress, this one I never did the range plot, but soon I'll change de antenna! The middle one is one Pi B+ with the FlightAware Pro Stick (without case because the heat) and a CanTenna that i made following the tutorial that are here in the forum by @abcd567, this one I did the range plot (photo bellow) and is pretty good for a home-made antenna! And the last one are the new FA Feeder, the Orange Box, which is a Pi 3 with the Pro Stick and come with a LCD where you can setup the gain, backlight, reboot and see the status, this one is with the FA antenna and I received him last week (that is why I built this box) and so the Virtual Radar is doing the range plot right now, soon I'll have for compare, but I already can see that my range has increased! And the hub are a TP-Link with 8 ports, normal one!

    Each circle have 100km diameter!
    ProStick 2.png
    Last edited by dudesjp; 2016-09-11, 02:04.

    Leave a comment:


  • GitseBase
    replied
    Originally posted by dudesjp View Post
    Hey everyone, after sometime and a I new feeder I decided to build a more "pro" case for my feeders since they stay in the roof! The antennas remain the same, one FA Antenna, one CanTenna and one dongle antenna!

    [ATTACH=CONFIG]8013[/ATTACH][ATTACH=CONFIG]8014[/ATTACH]
    [ATTACH=CONFIG]8015[/ATTACH][ATTACH=CONFIG]8016[/ATTACH]
    Looks good!
    Care to give some more details about your setup? (height, range .etc..etc..)

    Does the FA feeder come with an LCD?

    Leave a comment:


  • djborec
    replied
    Originally posted by GitseBase View Post
    This is a Weatherproof Junction Box. Depending on the location you'll place it make sure it is fit for your weather conditions.
    Yes I currently have waterproof box, but for my next radar I want something smaller with antenna connection on side and rj45 on other side (so exactly like one on picture) and was not able to find shop where to buy it.

    My current POE box looks like this:
    Photo 10.09.16 17 30 05.jpgPhoto 23.08.16 0 15 03.jpg

    Leave a comment:


  • dudesjp
    replied
    Hey everyone, after sometime and a new feeder I decided to build a more "pro" case for my feeders since they stay in the roof! The antennas remain the same, one FA Antenna, one CanTenna and one dongle antenna!

    IMG_6493.jpgIMG_6494.jpg
    IMG_6495.jpgIMG_6497.jpg
    Last edited by dudesjp; 2016-09-11, 01:57.

    Leave a comment:


  • GitseBase
    replied
    Originally posted by djborec View Post
    Wehre did you get this outdoor box? I am buidling new radar and I need box exactly like this...
    This is a Weatherproof Junction Box. Depending on the location you'll place it make sure it is fit for your weather conditions.

    Leave a comment:


  • djborec
    replied
    Originally posted by RIN67630 View Post
    Here is my new construction for a friend:
    The Jpole construction:
    [ATTACH=CONFIG]7349[/ATTACH]
    The antenna with the PVC boom:
    [ATTACH=CONFIG]7350[/ATTACH]
    The receiver, Raspi and power supply:
    [ATTACH=CONFIG]7351[/ATTACH]
    The almost finished unit:
    [ATTACH=CONFIG]7352[/ATTACH]

    It will be tested for a week or two just outside on the balcony.

    Then it will get onto the roof.
    I'll post the diagrams then.
    Wehre did you get this outdoor box? I am buidling new radar and I need box exactly like this...

    Leave a comment:


  • Ronny Jonckers
    replied
    1. the whole week around 140 nm with my coco and now suddenly 195nm without changing anything… How do you explain that
    2. Coco with LNA4all but without filter gives more bad result than the coco without LNA.
    I'm still waiting for the filter, that's for next week (Flightaware filter from Ebay) also the experiment with the PCB antenna (which is almost ready)...

    Leave a comment:

Working...
X