I'm a bit puzzled by these two O-2 modes. When UCW is selected, the lower CW sideband is audible; that is, if zero-beat is 7020, to hear the signal one tunes down to 7019 etc. When LCW is chosen, one must tune UP from zero-beat to hear the signal. Isn't this the opposite of what LCW and UCW should mean? -- --John K3GHH Registered Linux User #291592