I used: 1/(1+exp(-x))
where x = the pulse train. I then modulated a 7 MHz carrier with the result (although the results don't care what the RF frequency is, of course). AlĀ W6LX >>>Which sigmoid function did you model, Al? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com