Keith, I am not familiar with this particular case, but usually people only want to use log scales when the data range spans over many decades. If you take the logarithm of your data the decades become equidistant, in other words, the "distance" between 1, 10, 100, 1000, ... will be the same. Therfore, I don't see any reason why someone would want to have log scale on the X axis in a signal strength vs. frequency graph. Your frequency range spans 2 decades or so, if it is AF.
You may, on the other hand, want to try logarithmic scale on the Y axis. The signal strength can indeed span several decades. Taking the above into consideration I would also expect the passband of a filter to be symmetric if you use linear X axis and skewed if you use logarithmic X axis. 73 Alex OZ9AEC On 3/10/06, Darwin, Keith <[EMAIL PROTECTED]> wrote: > I've read through the instructions for aligning filters using Spectrogram. > IIRC, they say to set the X axis to linear. Shouldn't it be set to log? I > think the difference will be using Linear, you'll have your passband skewed a > bit to the low side. > > - Keith KD1E - _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
