Hello Nikos, welcome. It is a good question. The answer is a combination of ear, eyesight, and software. You can actually hear what each common mode sounds like by using software and pressing transmit. Even if you are not actually transmitting, you can then hear what the mode sounds like. When using you eyes, look at how wide it is in the software's waterfall. PSK31 will be approximately 30Hz wide in a waterfall, PSK63 twice as wide. RTTY will be about 170-200 Hz wide. Olivia, Thor and other modes will be about 500-1000 Hz wide. Telling the difference between the different Olivia, Domino. and THOR modes takes more practice. To my ears, Olivia has a distinct two-tone start up tome that sounds like an old French ambulance siren. Is you use software with RS ID , the sofwtare will tell you IF the other station is also transmitting an RS ID at the beginning of their transmission.
Andy K3UK --- In digitalradio@yahoogroups.com, "nikos_katsoulis" <nikos_katsou...@...> wrote: > > Hi all, > > ...the subject show my level. > > My question is this, > > How can i recognize the mode of the signal that i am listen. > > Is this a question of ear, (I do not think so) or is this a question of > software? > > Thanks for help.Nikos > > Have a nice day. >
