> Although Sub is obvious, I don't immediately associate RF with the > Main RX. Main or even MN might be clearer I.M.H.O. > It is hard to make an M in a 7-segment display such as is used for VFO A :-( We thought of A/b, 1/2, and others but RF/Sub seemed the best of the combinations we thought of... 73, Lyle KK7P