Hi Simon and gang. Seems a simple CW keying circuit with linear up/down ramp and 180 grades phase flipping would make a much better job. http://www.kufr.cz/~ok1iak/temp/psk31-trapezoidal-envelope.pdf
This simple circuit could do it after one capacitor is replaced with higher value: http://kd1jv.qrpradio.com/ compare to overdriven SSB transmitter. http://www.kufr.cz/~ok1iak/temp/psk31-overdriven-flat.pdf 73, Vojtech --- In digitalradio@yahoogroups.com, "Simon \(HB9DRV\)" <simon.br...@...> wrote: > > Please look at: > http://www.ham-radio.ch/images/HRD-AudioMonitor-2009-04-14%20114504.jpg > > 10W from a TS-140S. > > Simon Brown, HB9DRV > www.ham-radio-deluxe.com >
