[Elecraft] spectrogram for mac or linux?

[Marteinn Sverrisson]

Top class software 

Baudline is a time-frequency browser designed for scientific
visualization of the spectral domain.  Signal analysis is performed by
Fourier, correlation, and raster transforms that create colorful
spectrograms with vibrant detail.  Conduct test and measurement
experiments with the built in function generator, or play back audio
files with a multitude of effects and filters.  The baudline signal
analyzer combines fast digital signal processing, versatile high speed
displays, and continuous capture tools for hunting down and studying
elusive signal characteristics.

http://www.baudline.com/

Linux, FreeBSD, or Solaris operating system 
x86, x86_64, PPC, S/390, or SPARC CPU architecture 
X11 server display

73, Matti


Disclamer: I am just a happy user of Baudline

here is an example of freq response of my K2 filter, using Baudline
an Gnuplot.
http://www.raunvis.hi.is/~matti/TF3MA/lsb_usb.png
-- 
   Marteinn Sverrisson    TF3MA
          Langitangi 2    Internet: tf3ma [at] raunvis [dot] hi [dot] is
        270 Mosfellsbær   http://www.raunvis.hi.is/~tf3ma
               Iceland