One way of collecting data is by clicking on Spectrum.  In Spectrum mode Smiley separates the incoming radio waves into a spectrum, like a prism, and takes data on a single part of the spectrum

9. By clicking on Begin Scan, Smiley will begin taking data.
10. By clicking on Open Data File, you can open previous scans.

By clicking on Plot, Smiley will plot the data again.  By clicking on List, Smiley will list all data points. List is useful for coping and pasting the data points to a spreadsheet.  Delete deletes the saved file. Click on Cancel to return to the graph.

11. By clicking on Clear you clear the data Smiley has collected.
12. Save Scan saves the data you have just taken.
13. Changing the IF GAIN magnifies the amplitude of the incoming radio waves.  Increasing IF GAIN is analogous to raising the volume of a radio.
14. You can change the PLOT RATE by moving the slider up and down. By increasing the PLOT RATE Smiley complete plotting the data more quickly, but less data is collected.
15. The Base Frequency is the frequency that Smiley is tuned to. Smiley then plots intensity vs. the frequencies determined by the Frequency Range.  For example, by having your Frequency Range at -600 to 600 KHz and your Base Frequency at 1.42 GHz, Smiley will plot intensity vs. the frequencies between 0.82 GHz to 2.02 GHz.
16. Here is where your plot will show up.  By right clicking on the graph you get many different options such as showing a grid of the graph, zoom in, zoom out, etc.
17. While Smiley is plotting, the current data Smiley is receiving will be shown in the data entry tables labeled Frequency Offset and Intensity.

Note:

The only frequency you will see spectral features is 1.42 GHz (because this corresponds with the spin-flip tranistion of neutral hydrogen).  In other words you will not see a peak with any other frequency.