The KX1 does not have a tunable BFO so the sideband used is fixed - = lower sideband on 40 and upper on 20 meters.=20 Ron AC7AC -----Original Message----- Ron, et. al., It's also nice to be able to have the choice of USB or LSB when = listening to AM SW stations... it sometimes help to avoid the heterodynes that are = nearly always there <G> Dave G. KK7SS