Yes and when running PSK-31 if you don't get IMD reports of between -21dB and/or more like -29dB then most likely something at your station needs improvement. Usually overdrive either in the audio system or RF path is a contributing factor. ALC action is often one culprit. Some radios leave the SP or EQ circuits in the path. They should be OFF or bypassed.
Bob, K4TAX Sent from my iPhone > On Oct 17, 2018, at 9:35 PM, Walter Underwood <wun...@wunderwood.org> wrote: > > 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 rmcg...@blomand.net > ______________________________________________________________ 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
