Specifically about PSK31, that encoding needs a very linear transmit system. The 25 W recommendation keeps the signal and the peaks in the linear region of most 100 W amps. Modes that do not use phase shift keying on a single carrier might not have the same linearity requirements.
A clean 25 W PSK31 transmission might be heard better than a distorted 100 W PSK31 transmission. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 17, 2018, at 6:52 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: > > On 10/17/2018 6:36 PM, Bob McGraw K4TAX wrote: >> At the same time, many of my contacts are made with 50 watts or less. > > Yup. I mostly use FT8, JT65, and MSK144 on 6M and 160M. I generally run as > much power as I can on 6M, and on 160M to work EU or AF. OTOH, I'm still > trying to finish 160M WAS QRP (need VT and SC), and recently worked the KH1 > expedition on 160 with 5W using FT8. They were specifically using FT8 trying > to put some EU stations in the log. I've since learned that AA7JV was the op. > > 73, Jim K9YC > > ______________________________________________________________ > 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 wun...@wunderwood.org ______________________________________________________________ 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
