Thanks James, I found it... apparently you can only do it on a scatter plot scale.
Anyway.. FWIW, I made an Excel sheet that has all of the Stryke BassZone test CD frequencies listed
and will adjust for the Radio Shack analog meter and draw a nice logarithmic graph.
You can download the spreadsheet
HERE.
Just plug in your raw readings into the white column and the adjusted graph appears on the right. Then you can just copy the graph and paste it into your favorite graphic software and put it on your website or show it off to your friends.. whatever.
Not to take full credit, but, I modified the spreadsheet from
BFD, and expanded the frequencies to the full spectrum.
P.S. You can also either enter the actual dB rating or the difference off of your reference level (ie: -5dB, 10dB, etc..) the chart adjusts to fit.