[Elecraft] KPA-1500: any distortion when operated at Low Power

I operated my KPA1500 at 200 watts on 30M without any problems (cw, FT8/RTTY/psk). ICOM-7610 is driving the KPA1500 My normal power was about 500 watts (or less) with a few ventures to 700 watts as I found that my Ameritron remote coax switch did not like real high power. Unfortunately, my KPA

[Elecraft] KPA-1500: any distortion when operated at Low Power?

Hi Guys,  Wondering if anyone has measured or experienced distortion on a KPA-1500 when operated at low power, such as: 200, 400 or 800 watts?  I ask because sometimes I need more than 100 watts to make a Qso but sometimes it's fun to run the minimum power required to complete the Qso.  That sai