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Re: [Discuss-gnuradio] Some problem with my USRP N210

From: John Malsbury
Subject: Re: [Discuss-gnuradio] Some problem with my USRP N210
Date: Thu, 9 Oct 2014 08:53:53 -0700

If there aren't any GR-specific issues, you might consider moving this to the UHD-users mailing list.

  • Presumably, you're using an SBX?
  • Is there any chance the bursts are just very short? Experiment with the trigger settings on the scope to see if you can catch any bursts.


On Thu, Oct 9, 2014 at 8:43 AM, liisuu <address@hidden> wrote:
Hi everyone,

I am a new user of GNU radio. I am trying to communicate between Tmote Sky
sensor node and USRP N210.

I use the Tmote Sky sensor node as transmitter to broadcast messages by
flashing the example code into the node. The messages are broadcast in radio
channel 26. (The code is this one

I use USRP N210 as the receiver. I just want to test whether my USRP can
receive the broadcast messages or not. So I made a small receiver in
gnuradio-companion which just has a USRP Source, a Scope Sink and an FFT
Sink. I set the sample rate to be 4M, center frequency to be 2.48G, Channel
gain to be 15dB.

However, in the scope sink and fft sink, I cannot find any signal except the

I am sure the sender works successfully because I have a receiver
implemented on another Tmote Sky sensor can receive the broadcast messages.

I just want to make sure my USRP N210 can receive the signal so that I can
make a 802.15.4 receiver on it in the next step.

I hope someone could give me some suggestions that I can make it work.

Thanks in advance,


top_block.py <http://gnuradio.4.n7.nabble.com/file/n50723/top_block.py>
Receiver.png <http://gnuradio.4.n7.nabble.com/file/n50723/Receiver.png>

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