Search this list 160m PA or look at store for info. The issue is the diode switching is lossy down there, it's even a compromise on 80m where I get about 20 watts on 13.8 volts. Maybe someone has converted it to relay TR switching? The ubitx works nicely on 160m with its relay switching and of course a LPF added.
Yes I’m a glutton for punishment…was thinking about getting a 50w amp kit and using the filter and torroid values published to see it will work on 160…anybody else tried to do this?