Have a look at (Freeware) "Spectrum Lab", by DL4YHF. see: http://www.qsl.net/dl4yhf/ Jerry W4UK At 02:51 12/17/03, k7wm wrote: >Some time back I read in some magazine about software that would make a >computer a spectrum analyzer. Does anyone have any ideas where I could look. >73 de >Wayne k7wm at i10net.com