By the way, a similar explanation can be found in the Theory of Operation section of any of our transceiver manuals.
Wayne N6KR > On Apr 7, 2019, at 9:58 PM, Phil Hystad via Elecraft > <elecraft@mailman.qth.net> wrote: > > If you look at various old circuit diagrams of ancient radios made from > electronic circuits you find that the telegraph keying for the radio involves > switching on and off the driving oscillator frequency or something similar. > > However, with an SDR, you have other options and I have no idea how it is > typically done. For example, a digital signal can be produced that > represents the Morse coding and this signal need merely be converted to > analog and amplified. Or, is there still an analog circuit being switched on > and off for Morse code (telegraphy) keying with a modern SDR. > > Can someone describe how this is done in a radio like the KX2. And, is it > done differently in the different Elecraft radios — I presume that the K2 > would have the more traditional sort of circuit but that is really just a > wild guess on my part. > > 73, phil, K7PEH ______________________________________________________________ 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
