> I assume that many people know already, but just in case there are > some that do not, WINMOR will not be a digital mode that your can use > for keyboard "chats" or QSOs, it is intended to allow you to connect > to a HF Radio Message Server and unload your email formatted messages > .
> Q Why not .. looks like with the passage of 'noble cw' we now have > a new wave of message handeling systems to replace it, which 'will > not' support a direct qso ? > Can we have a little button that says 'arq qso mode' that would > be 'fun' > G . Graham, when we implemented ARQ in NBEMS, we could have included an ARQ chat mode, but, instead we included "Plain Talk", which communicates "between" ARQ blocks for coodination purposes (such as suggesting a speed change), but not using ARQ, because using ARQ slows down the communication exchanges so much. The mode selected for ARQ needs to be pretty good anyway in order to keep the error rate down, or there will be too many repeated blocks, and the link may even timeout. So, by using a low error-rate mode to start with, ARQ is not needed for a QSO, because hams are used to seeing some errors in the reception (just like you can also get with CW), and either mentally correct for the error or may just request a partial repeat. ARQ is more important for messaging (vital actually!), to be absolutely sure the message does not have any errors at all, for even a single error in a phone number for delivery will render the entire message undeliverable. However, in QSO's, we hams often use a type of "manual FEC" by just repeating an important word (such as a callsign, or grid square) two or three times, which is faster than repeating a whole block just to correct a random error which may not destroy the meaning of the communication. 73, Skip KH6TY NBEMS Development Team
