Linrad should fill the bill.

Do a search for the SM5BSZ website

At his index page,   http://www.sm5bsz.com/update.htm

there is some recent work on phase noise.

Usable in Linux or windows. Not for the faint of heart, very capable,
very experimental, very flexible. Grab your saddle and hang on.....

If Spectrum Laboratory does not immediately satisfy the need, contact the author

http://freenet-homepage.de/dl4yhf/spectra1.html

Stan, W1LE



Bob Camp wrote:
Hi

Assuming I have a decent sound card, and a computer, the next thing I need is 
software. If I want:

Required:

1) non- commercial 2) 1 Hz normalization
3) good low frequency processing (decimation ahead of the fft)
4) low cost

Much preferred:

5) a non-evil OS 6) Rational performance on a non-quad core system
7) free
8) rational calibration 9) scope view.
10) reasonable graphics
11) active support by the author

The application is measuring phase noise. That what makes 2 & 3 pop up on the list.
I've looked at a lot of programs and they all seem to be pretty slick. The ones 
I've looked at so far don't quite hit the mark for phase noise. I'm pretty sure 
that there are others on the list who have dug into this same issue already.

Bob
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