Looks like SPECTRAN also at
http://www.weaksignals.com/
Will read from both a sound card and a .wav file. No need to modulate anything just read a wav file.


Jim Hannon

---------- Original Message ----------------------------------
From: Frank Gentges 
Reply-To: psn-l@..............
Date:  Fri, 25 Feb 2005 11:12:39 -0500

>Hi all,
>
>Reaching across the desk to my ham radio stuff, we have been using 
>spectral analysis for very low speed CW on experimental LF 
>communications/beacons.  They have to resolve down to the sub-hertz 
>region.  A popular program, ARGO, that is free and runs on the PC is 
>available for download at
>
>http://www.weaksignals.com/
>

--
Jim Hannon
http://www.fmtcs.com/web/jmhannon/
42,11.90N,91,39.26W
WB0TXL
--

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