> On Aug 25, 2018, at 09:06, Gary Smith <Gary at ka1j.com> wrote: > > Folks, > > For years I've turned on the amp when > needed or when anticipated I will likely > use it as trying to work a DXpedetion or > sked. Google all the Eimac papers. Care and Feeding, etc.. There is stuff about reducing filament voltage during standby and during operating.