Re: [Discuss-gnuradio] grc file -- display problem

hello

We have installed gnu radio and working with ubuntu .  Attached is the grc file and its output which basically gets a signal from source and tries to display the fft  of the same as a spectrum. W.r. to these , kindly clarify the following

1.  why the screen shot is displaying x-axis and y-axis as dB only i.e.  2.03dB, -8.83dB. 

2.   How to interpret the magnitude of the output and on what basis

3. We would basically want to write the peak of the signal into a file to record continuously and request you to give an example for the same. 

thanks &  regards

Parvathi 
Scientist/Engineer 
National Atmoshperic Research Laboratory , Department of Space
Gadanki, Tirupathi
Andhra Pradesh 
India

Ph. 91 877 2500583