I strongly disagree that ALC should be zero for FT8 but that is based only on my experience with the TS-590S.
My draft paper on FT8 harmonics can be found here - https://www.dropbox.com/s/85aoc937kz235iq/FT8%20audio%20harmonics%20draft%20d%20k3wyc.pdf?dl=0 ALC must be in the control range for closed loop power control to work on a TS-590. Operating in the normal ALC range with a TS-590 does not degrade the F8 signal. 73, Andy k3wyc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

