--- In [email protected], "Ralph Lambert" <ralph.lamb...@...> wrote: > > Why do I sometimes see double entries for the same call sign in the > waterfall. Is this some one working split? It seems like it is a > duplex issue or am I way off the boat on this one? > > 73, Ralph (AJ4GR) >
How do you know they are doubles? You can expect to see doubles if using multiple decode options like those listed as "stations heard" in Winwarbler or in the "panoramic" view in Multipsk. In regular decode for BPSK31 you can also see a "harmonic" every 1000 Hz if a station is transmitting with a badly over driven signal. You may simply be seeing other close by signals, or possibly mistaking the two parallel vertical lines normally seen in BPSK31. Andy K3UK
