1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

RTL SDR Server

Discussion in 'Microcontrollers' started by dr pepper, Aug 30, 2017.

  1. dr pepper

    dr pepper Well-Known Member

    Joined:
    Oct 6, 2008
    Messages:
    4,654
    Likes:
    247
    Location:
    North west UK
    I was thinking of putting together a Sdr server so I could put a sdr on one of the tall silo buildings at work, so I can access it at home or anywhere else for that matter.
    Has anyone else done this or have any ideas?, I'd like to use an esp8266 or 32, I see there are a few that have used rasp pi's for this.
     
    • Like Like x 1
  2. be80be

    be80be Well-Known Member

    Joined:
    Aug 23, 2008
    Messages:
    4,807
    Likes:
    135
    Location:
    morristown,tn
    Don't know but i should have my sdr tomorrow but id think the pi would be better maybe a zero.
    If you used the esp you need otg for the usb
     
  3. dr pepper

    dr pepper Well-Known Member

    Joined:
    Oct 6, 2008
    Messages:
    4,654
    Likes:
    247
    Location:
    North west UK
    Good point, the feather M0 with wifi is available for the arduino platform, but I guess theres not much support yet.
    I found an app for the pi and the sdr.
    The rtl can be used in direct sampling mode below 35mc, but I'd reccomend an upconverter, you'll also find the frequency is off by a kc or 2, but theres a correction register, you could use WWVB as a known source.
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. valknut

    valknut New Member

    Joined:
    Aug 7, 2017
    Messages:
    17
    Likes:
    0

    Wow, never heard of this before! I still don't understand how such a broad range of frequencies can be accessed simultaneously. Does the device scan the whole range in little slices at a high rate of speed, or what?
     
  6. be80be

    be80be Well-Known Member

    Joined:
    Aug 23, 2008
    Messages:
    4,807
    Likes:
    135
    Location:
    morristown,tn
    I just started playing with mine found out they all don't play good on linux But I did find a good site to set it up on windows.
    It scans as fast as you can move the mouse But I still don't no much about the app.
     
  7. dr pepper

    dr pepper Well-Known Member

    Joined:
    Oct 6, 2008
    Messages:
    4,654
    Likes:
    247
    Location:
    North west UK
    The rtl dongle receives a wideband range of frequencies, its unlike 'standard' receivers by means of its a IQ receiver, the dongle converts radio frequencies into quadrature signals of lower frequency for the computer to process.

    Burt I had issues with sdr#, I switched to hdsdr I find it much better.
     
  8. BobW

    BobW Active Member

    Joined:
    Apr 28, 2010
    Messages:
    501
    Likes:
    52
    Location:
    Canada
    Have you tried Gqrx software?
    http://gqrx.dk
    It's written specifically for Linux/Unix, and there's a Pi version available. I use it on my Macintosh with an RTL dongle.
     
    • Informative Informative x 1
  9. be80be

    be80be Well-Known Member

    Joined:
    Aug 23, 2008
    Messages:
    4,807
    Likes:
    135
    Location:
    morristown,tn
    I have a rtl-sdr it shows up but i cant get it to work as normal user but i didnt try it much.
     

Share This Page