No, I have run mine both ways. Works FB on 120v 73 Eric WD6DBM On Wed, Dec 12, 2018, 4:13 PM Tom Berry <tberry1 at triad.rr.com wrote: > Is there any advantage to use 220 V over 110 V on the KPA500? > > Is it worth having an electrician come to the house and install a 220 V > outlet for it? > > > Thanks > > Tom AA4VV > > >