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  • ohh, i see, thank you for the information. i will also test that kind of antenna. and try to make it at least 2 meter higher on the roof.

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    • If you have a long coax, and prostick is at other end of coax, it may be beneficial to add a satellite LNA (or any other LNA) near the antenna.

      However this all is location specific, and normally the best configuration of hardware at any location is determined by trial-and-error. Adding filter and adjusting gain also plays an important role.

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      • by the way, how to adjust gaing? i saw your tutorial but i cant find gain.php on my dump1090 folder

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        • Which version of dump1090 you have?

          - dump1090-mutability ver 1.14

          - dump1090-mutability ver 1.15~dev

          - dump1090-fa

          .

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          • i think is 1.15 but not dev, because i see new map and is installed from

            sudo apt-get update && sudo apt-get install dump1090-mutability -y

            from my own tutorial ( now i am copying many of the info you have)

            pi@raspberrypi:~ $ dump1090-mutability
            Tue Aug 20 22:19:11 2019 BST EB_SOURCE EB_VERSION starting up.

            Comment


            • The EB_VERSION is same as mutability ver 1.15~dev.
              It is a built package maintained in Debian Buster repository by Debian hamradio maintener. It is a snapshot of source code of dump1090-mutability ver 1.15 ~dev.

              Dump1090-mutability ver 1.15~dev package now available in Repository!


              https://bugs.debian.org/cgi-bin/pkgr...090-mutability


              To change gain:

              sudo dpkg-reconfigure dump1090-mutability

              sudo nano /etc/default/dump1090-mutability
              Last edited by abcd567; 2019-08-20, 22:11.

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              • thanks, as i remember in all my configs are:

                # RTLSDR gain in dB.
                # If set to "max" (the default) the maximum supported gain is used.
                # If set to "agc", the tuner AGC is used to set the gain.
                GAIN="max"

                so, is this good?

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                • Try different gain value, like 49 45 40, 35 etc, and at each value observe message rate / number of planes to find best setting.

                  Alternatuvely wiedehopf has developed some script to do this tweaking of gain.

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                  • great, i will test.

                    btw what means the F and the T in front of station?

                    mines are T-

                    but why?

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                    • well, a small update from my antennas.

                      i raised the cantenna i think are 5meters above floor, and it works good

                      antenna01.png

                      config is raspberry pi 3 b + flightaware yellow +flightaware filter and cantenna.

                      my other antenna is the 2 pole like abcd567 did some time ago, here is the pic.

                      antenna03.jpg

                      and this is the data i am receiving:
                      nld2.png

                      a few planes but some are far away, setup is

                      raspberry pi 3 b + dvb-t dongle + and mcx extension to 2 pole antenna as shown in picture ( no filter ) next week filter will arrive and i have to test that config.

                      funny thing, on this config i saw a plane with afghanistan flag, but culdnt take a screen shot to find more about it. since radar is in Mexico, it was weird.

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                      • As with dipole you are using dvbt (no integral amplifier), better add a Satellite amplifier close to the antenna. You will need a power inserter and a 15V DC power supply also.

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                        • i will test dipole antena with blue flighaware dongle, the one that has the filter, and the in line amp.

                          if you see one at ebay, just send me the link =)

                          i really appreciate all the info you post, this is why i did it, because you explain it so good, and the images.

                          thanks!

                          Comment


                          • If you use Flightaware blue dongle, you will not need a satellite amplifier (unless your coax cable is too long).

                            Comment


                            • great, you teach us to test, and i will test anything! =)

                              do you think this will help?



                              i buy one but i didnt see it was 5Mhz - 1000Mhz, so for Planes doesnt work, i will use it on my AIS Raspberry to see if that works ( 162Mhz )

                              Comment


                              • Flightaware ProStick Plus at Amazon . com

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