| Electronics > Projects, Designs, and Technical Stuff |
| Radio Direction Finding |
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| PA3BNX:
Hello Every Body, I have done some building for the 4017 SuperSimpleSoundDoppler. PA0CVW did some print art work and I did also some PCB work. We did this in Paint ! There is a jumper on the board that's used for 3 of 4 monopoles or dipoles Doppler antennas. So it's also easy to have a 3 antenna direction finding system. PA8W is working on a 8 antenna Doppler direction finder with soft switching So we hope to get that working soon. So have fun, There is also a new version SoundDoppler124cAll.zip on the PI4WAG site. Soon there is version SoundDoppler124eAll.Zip I added MyMapping137 with Waypoints And I fixed a Bug in SoundDoppler124 SinCosDetector. And added a Error message for the referency if something goes wrong with the hardware connected. I did build a 4017 SuperSimpleSoundDoppler in a blue PCB box with speaker. |
| Daniel_DB9:
Hi Lodewijk! Thanks for that amazing Software! In the moment i use a Ramsey-2-Sounddoppler with 4 Dipols. I builded up a 2x4017 PCB for 12 Antenna-Switcher an 12 Dipols with 2,66m in diameter. If you wish, i can give some Photos or Layouts in KiCad. I have a wish for the Sounddoppler-Software, can i start? By the way... of course not now, step by step, if you think it makes a sense. - KML-Log saves in a day-folder and then in a hour-folder for a defined time period. Edwin PA7FRN set a test account at his website for me and it works very well! One Question i still have... GPS for mobile-use. Can i use any USB-GPS Receiver that emulates a COM-Port? best regard Daniel |
| PA3BNX:
Hello Deniel and others. I saw that you want to use the DL5DI URL protocol and you cannot change the URL. I do not use this myself but I will check the code and make it possible to change the URL So here I piece of the subroutine I use. --- Code: ---Public Const strcURLdl5di As String = "http://db0myk.prgm.org/peiler.php?" Public Sub DL5DI2HTTP(ByVal MyDegrees As String, ByVal MyAgrelo As String, Optional bMu As Boolean = False) ''ToDo ''@26-04-2011 ''@18-08-2011 ''@26-08-2011 ''Static string Static OldDegrees As String ''Const string Const RDigits As Integer = 5 Const p As String = "p1=" Const d As String = "," ''String Dim a As String Dim MyUrl As String ''Nothing ToDo ''Example http://db0myk.prgm.org/peiler.php?p1=52.21667000,5.16666700,25.0,45 ''Also check for Callsign Select Case strArrayPacket(1) Case strNoCall, "" bDL5DI = False Form1!mnuDL5DI.Checked = bDL5DI OldDegrees = "" Exit Sub End Select ''@14-09-2011 ''To Many ZeroCrossings or nothing in averaged If bMultiDetecting Then ''Never draw if MultipathDetect + Agrelo If arrMulti(3) > 1 Or Val(MyDegrees) = cNoDegrees Then Exit Sub End If End If If bMu Then Exit Sub If OldDegrees = MyDegrees Then Exit Sub ''If degrees the same as last time do not send data. If Val(MyAgrelo) = 0 Then Exit Sub If MyDegrees = strcEmpty Or MyDegrees = "" Then OldDegrees = MyDegrees Exit Sub Else OldDegrees = MyDegrees End If MyAgrelo = LTrim$(MyAgrelo) ''Factor a is the deviation according 2 lines beside the bearing in degrees Select Case MyAgrelo Case "1", "2", "3" a = "90" Case "4", "5" a = "45" Case "6", "7" a = "22.5" Case "8", "9" a = "10" Case Else ''Nothing ToDo Exit Sub End Select If bGps Then If GPSVal = "A" And Val(GPSKnots) >= Val(strArrayPacket(5)) Then MyUrl = strURLdl5di & p & Round(strConv2Decimal(GPSLat), RDigits) & d & Round(strConv2Decimal(GPSLong), RDigits) & d & Val(AddCompassValue(MyDegrees)) & ".0" & d & a Else Exit Sub End If End If If bGps = False Then MyUrl = strURLdl5di & p & Round(strConv2Decimal(strArrayPacket(3)), RDigits) & d & Round(strConv2Decimal(strArrayPacket(2)), RDigits) & d & Val(Conv3(MyDegrees)) & ".0" & d & a End If ''Debug.Print MyUrl Call GotoUrl(MyUrl) End Sub --- End code --- So here I piece of the subroutine I use. I will check and try to test these routines and make changing the URL possible where the error is of the URL changing. Yes I can add also the Quality just tell me how the URL string has to look. I will do tomorrow some testing and I let you know when the new version is there. Currently I was working in MyMapping1.38 To get all the remote and local control functions right for the FT817 through a cat62 cable. I am also planning to make a station data base in MyMapping139.exe So know stations with there name location pwr frequency etc. We are also working on a new PCB design. Two SuperSimpleSoundDopplers on one eurocard. |
| PA3BNX:
Hello Everybody, Today I did fixed the DL5DI error Now you can change the URL And I changed the URL Line I added the Quality factor to. So If you see SoundDoppler126.zip on our sites that's fixed. I also discoverd a zero crossdetector error in sounddoppler 125 Because some time agar i did improved the SinCos Detector and i made a mistake with a global variable. The version 124 en 125 Will only work with zerocrossdetector from 0 to 180 degrees hi. But Now it's fixed The new option FM avg average FM audio signal is very good for the software squelch. The squelch wont open on short loud bursts in the FM audio noise anymore. Also has the MyMapping139.exe good working FT817 Cat control with 10 memory channels to. |
| PA3BNX:
Hello Everybody. Here I did find something that is of intrest for us A WirstWatchDF finder http://wirelessinnov.com/documents/WRISTBANDDFSYSTEMAPRIL122011.pdf Very Nice Further the SoundDoppler127aAll.zip software is there It has better software squelch and in MyMapping it has advanced Waypoints called Transmitsites. |
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