FT8 (and other digital modes) frequencies

If you are like me, you forget frequencies of various digital modes and need reminders. As an example when I went on 10m FT8 at first I went on 28.174 whereas the correct FT8 frequency is 28.074MHz. When in doubt I look here. He has a series of frequencies listed by mode.

See https://www.qsl.net/sv1grb/psk31.htm