Re: Fwd: New Sherwood report
Posted by
Leigh L. Klotz Jr WA5ZNU on
Dec 02, 2010; 6:37am
URL: http://elecraft.85.s1.nabble.com/Fwd-New-Sherwood-report-tp5793377p5794970.html
Kok Chen provides some good references for CW transmit shaping, but cocoaModem source isn't available for hams to look at.
fldigi also offers a choice between raised cosine and Blackman window for CW TX, and the source is in the fldigi distribution at src/cw_rtty/cw.cxx available from
http://w1hkj.com/Fldigi.htmlIf you want to experiment with your own shaping code, you can compile fldigi for Windows, Mac, or Linux.
I believe the shaping code is by Dave W1HKJ as it wasn't present in earlier programs.
Leigh/WA5ZNU