Calibrate RTL-SDR with Mobile Phone or Cell Towers – How to Fix Frequency Offset

1. 

   NeedSec says:

   February 27, 2014 at 8:29 PM

   Thanks for the feedback. You are correct selecting the strongest channel
   would be optimal. I appreciate the terminal tip as well, awesome shortcut.

   Reply
2. 

   blade9z says:

   February 27, 2014 at 7:38 PM

   TY for the video, very helpful.

   Reply
3. 

   Henk de Vries says:

   February 27, 2014 at 7:16 PM

   Nice, but shouldn’t you select the strongest channel?

   Reply
4. 

   Henk de Vries says:

   February 27, 2014 at 6:20 PM

   Also, ^L (ctrl+l) is a shortcut for `clean`.

   Reply
5. 

   Austin Bartz says:

   February 27, 2014 at 5:36 PM

   I tried your suggestion and it works great now! Thanks!

   Reply
6. 

   Austin Bartz says:

   February 27, 2014 at 5:27 PM

   Thanks for the video! This was just but I was looking for, but I have one
   small issue. Whenever I try to do anything with kalibrate I get the
   following error: pi@raspberrypi ~/kalibrate-rtl $ kal -s 900 shmat: Invalid
   argument terminate called after throwing an instance of
   ‘std::runtime_error’ what(): circular_buffer: shmat Aborted pi@raspberrypi
   ~/kalibrate-rtl $ Any help would be much appreciated.

   Reply
7. 

   Patrick Bregman says:

   February 27, 2014 at 4:29 PM

   The CXXFLAGS should go in front of the ./configure command The way it’s
   now it has no effect at all Or just leave everything on one line as on
   the original site.

   Reply
8. 

   roofanhealer says:

   February 27, 2014 at 3:36 PM

   Thank you very much for uploading this video NeedSec. I tried it out
   according to your instructions and it didn’t blow up my VM Could you
   tell me if an error of 19 ppm is bad? I guess it is correctable, now that I
   found the actual value.

   Reply
9. 

   Eric William says:

   February 27, 2014 at 3:19 PM

   Very cool!

   Reply
10. 

    Daniel Escobar says:

    February 27, 2014 at 2:47 PM

    very good, i would like shared with yours my blog sdrlatino . wordpress .
    com

    Reply
11. 

    NeedSec says:

    February 27, 2014 at 1:58 PM

    I think that is a shared memory issue with the code running on ARM.

    Reply

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