Hi,

We are two students from Sweden that has been watching your tutorials about SDR 
with HackRF One. We are studying at Linköping University in Sweden and are now 
doing a project about "Positioning with radiobased fingerprinting". In this 
project we need to build a SDR receiver and have got some inspiration from your 
lesson 1. But now we have a problem and that is why we contacted you. We are 
wondering two things. First we wonder how we can save the data from the FFT 
plot to a file on our computers and later use this file in MATLAB. Are there 
any blocks to use to make it work? Then we also wonder how to get the exact 
value and information of a peak in the plot. When you have the pointer at the 
peak you can see a value but it is not certain that it is the correct value. 
See figure below.


[cid:[email protected]]

We hope you can help us tackle this problem.

Finally we have to thank you for your good tutorials about GNU radio companion 
and how it works.

Best regards,

Erica Hellberg and Agnes Lindström

Norrköping, SWEDEN

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