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Re: [Discuss-gnuradio] Frequency Hopping

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Frequency Hopping
Date: Sat, 10 Oct 2015 13:05:22 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0

Hi Gerome,

always nice to hear when people are able to build something that works nicely :)
You might want to look at the gr-uhd pages in the GNU radio doxygen to learn how to send messages with timed commands to retune as you want, when you want. The Qt Sink also has a (normally hidden, can be enabled in the block config) message port input to change the center frequency.
Throw together something that, once per second, instructs the USRP to tune at a specified time stamp.

Best regards,

On 10/09/2015 02:26 PM, Gerome Jan L wrote:
Good evening community,

I've already made my spectrum sensing using energy detection in GNU Radio and it's working pretty good. Thank you guys! Now, I want my system to tune to a different frequency (say every second). It's frequency hopping. I won't be transmitting any signal, I'm only going to receive it and show on QT GUI Sink that the center frequency changes every second. Can you give me advice on how to do so? Thanks in advance! :)


Gerome Jan M. Llames 
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