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Thread: RTL-SDR with Enigma2 (SDG Radio)

  1. #31

    athoik's Avatar
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    Απ: RTL-SDR with Enigma2

    Hi,

    Welcome to our forum!

    Our solution is here: https://github.com/satdreamgr/SDGRadio

    Feel free to provide updates via pull request!

    If the usb stick is not recognized them most probably is because you have dvb drivers occupy that stick. You need to remove dvb driver or blacklist dvb drivers. I am sure, angelofsky knows better the bh structure.

    Also feel free to use our experimental images, maybe you will find them good enough

    Who knows, you might get the SDG virus

    Anyway welcome in our community! Enjoy your stay!
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  2. #32

    Απ: RTL-SDR with Enigma2

    Thanks for the nice welcome.

    All works on the BH image including RDS.
    I forgot the two files from your image.

    I started to experiment at 145 MHz VHF amateur band.
    I cut freq step to 25 kHz
    Now I'm trying to figure out the possibility of these options in the command line.
    I need narrow band FM for radio-amateur frequencies.

    If you have more explanation of these options
    I'd like them to know.

    Otherwise my RTL-SDR working perfectly with windows programs
    Much of this is possible..


    I hope for further development of this fantastic dongle.

    Regards to you all

    MX

  3. #33

    Re: RTL-SDR with Enigma2

    I have amateur 2 meters, and AM aircraft working pretty well. I found the dongle's center frequency or parts per million needs to be adjusted for these two modes, but not so much for regular FM radio. Will try to post what I am using soon in the python or py file.

  4. #34

    Απ: RTL-SDR with Enigma2

    Thanks to all of you,

    Now I can listen to FM with RDS Wide
    and narrow FM amateur and professional radio communications
    I expanded band without limit for test from 20 Mhz to 1.8 GHz
    and changed the step to 25 kHz for the test.

    Unfortunately we do not have the plugin buttons for modulation change , frequency bandwidth change and Step frequency change.


    But now i use yellow button for Wide FM/RDS and i can switch to Narrow FM .

    Wide 175 Khz and Narrow 10 Khz bandwidth .
    I have test AM
    aircraft communications bandwidth 3Khz (here)
    Working OK only the audio level is lower than FM.


    Command i have use for testing

    if config.sdgradio.rds.value:
    cmd = "sleep 0.5 && rtl_fm -f %sM -M fm -s 175k - | redsea -e | gst-launch-1.0 fdsrc ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=175000 ! audioresample ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=48000 ! dvbaudiosink" % freq
    else:
    cmd = 'sleep 0.5 && rtl_fm -f %sM -M fm -s 12k - | redsea -e | gst-launch-1.0 fdsrc ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=12000 ! audioresample ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=48000 ! dvbaudiosink' % freq


    Some options I threw out because I have not found some big if any effect

  5. #35

    athoik's Avatar
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    Απ: RTL-SDR with Enigma2

    Please note that rds will only work on 175k sampling with redsea.

    So better to remove redsea for 12k, it will process the stream faster.
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  6. #36

    Απ: RTL-SDR with Enigma2

    Oh yes , I have seen that and know, but I have not tested everything and have not cleaned code.
    Already, it works beautifully.

    Pls if you make plugin changes , change colors in skin coding to hex color codes .

  7. #37

    athoik's Avatar
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    Απ: RTL-SDR with Enigma2

    Quote Originally Posted by Matrix10 View Post
    Oh yes , I have seen that and know, but I have not tested everything and have not cleaned code.
    Already, it works beautifully.

    Pls if you make plugin changes , change colors in skin coding to hex color codes .
    You are master in skinning


    I suggest to send changes to github, if it is big trouble, upload somewhere the changes and I will commit them to repository!

    Thanks!
    Member SatDreamGr Projects

    Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
    Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

  8. #38

    Απ: RTL-SDR with Enigma2

    Well, first it is a little play
    I use only two hours this plugin

  9. #39

    Απ: RTL-SDR with Enigma2

    Try to add twoo buttons to start with
    to change the FM / AM modulation
    and to change BW. >> 175 kHz / 12 kHz / 3 kHz

  10. #40

    Απ: RTL-SDR with Enigma2

    continued testing

    the results are very good on short wave
    Radio amateurs use the USB / LSB modulation.

    I used NooElec USB dongle and NooElec UP converter for the HF bands (short wave)

    I had computed tuning frequency
    for example 14 MHz is 139 MHz in the plugin Tune.

    For the test with USB/LSB I dropped tuning step on 1Khz in plugin coding.

    Commands used:

    USB modulation

    cmd = 'sleep 0.5 && rtl_fm -f %sM -M usb -s 3k - | gst-launch-1.0 fdsrc ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=3000 ! audioresample ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=48000 ! dvbaudiosink' % freq

    LSB modulation

    cmd = 'sleep 0.5 && rtl_fm -f %sM -M lsb -s 3k - | gst-launch-1.0 fdsrc ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=3000 ! audioresample ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=48000 ! dvbaudiosink' % freq

    narrow AM

    cmd = 'sleep 0.5 && rtl_fm -f %sM -M am -s 3k - | gst-launch-1.0 fdsrc ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=3000 ! audioresample ! audio/x-raw, format=S16LE, channels=1, layout=interleaved, rate=48000 ! dvbaudiosink' % freq

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