[Elecraft] Using USB mode for PSK31 rather than DATA A

[Steven.Zabarnick at notes.udayton.edu]

After all this discussion of power control in DATA A mode vs SSB, I decided
to try using PSK31 with USB mode, rather than DATA A. I changed the MIC SEL
menu item to Line IN and adjusted the ALC meter to 4-5 bars using the MIC
GAIN control. The PSK31 power output appeared to closely match the K3 power
setting. Unfortunately, I received horrendous feedback about the widthand
IMD of my signal -- when I returned to DATA A mode, my signal width and IMD
returned back to acceptable values.

Steve N9SZ