Do you think it's possible to create a better cw modem? Something more intelligent and flexible. On Sat, Oct 6, 2012 at 8:48 AM, Rein Couperus <Rein@xxxxxxxxxxxx> wrote: > I did some testing on the CW copying capability of the latest stable fldigi, > and I must say I am not very impressed. Something must be done to mimic a > 'robust CW' solution, because I got 99% error on most signals. > Here is SP5KD calling a dxpedition with 20 wpm: > --- > E T *I EE ****H *H IE VD T W* I* T 5KD E B V R I I<AS>SEB > E6 EF5BD D I E SP5KD SIH EET E I EE U SP5KD SSAE E LP5KD > SP5KT IP5KD ETP5KD E ISP5KDE EDL5KD IP5XSE E D IP5KD E S E > SER5KD D IP5KD IH HPHCD A* SP5* IP5TTD EPHKD *5KD IW5KD > EP5KTE G5KD E<AS>5KD IPHKD EW5KD EP5KD E*KH I HKD S** HAS > S I<VE>5KS IP5BD IP5KD E E E E E E I E E I E E E E E EI T > ---- > You did not know there were so many ways to spell 1 callsign did you? > > Rein PA0R > > > On Fri, 5 Oct 2012 15:53:49 +0200 (CEST) > "Rein Couperus" <rein@xxxxxxxxxxxx> wrote: > >> Being a 'CW only' operator, this idea has been one of my pet projects for >> some >> years... I am thinking about a 'simplified' way to handle this, not a full >> ARQ >> protocol. I must admit that it is not highest on the todo list, but I might >> come up >> with some useable code next winter season... >> >> Some ideas which are on my 'would be nice' list: >> * Use a Coherent CW modem for a super sensitive link mode on a frequency >> in the CW portion of the band, running slow but full ARQ pskmail... >> Using multiple CW characters to form the complete ASCII 7 set... >> >> * Theoretically you could now already send short emails without ARQ connect >> using the unconnected APRS email service in pskmail... just switch fldigi to >> receive CW... (only trouble are the '@', '<SOH>' and '<EOT>' characters...). >> >> * A separate version of PSKmail called 'CWmail' could use 90% of the pskmail >> system infrastructure with a specialized protocol, and run in the CW band. >> >> *ARQ by ear... using your keyer to ask for a repeat... >> >> ... Meanwhile you can of course use Andpskmail without a laptop using your >> android phone... makes your backpack a lot lighter in weight :-) >> >> One other idea I have to make the transceiver smaller and lighter is >> to use a straight FSK mode on an Xtal controlled transmitter... >> >> I will take a few extra beers tonite, and do some more thinking :-) >> >> To realize all these goodies we will need some coding help (Perl for the >> server), >> as the pskmail project is not finished yet... >> >> 73, >> >> Rein PA0R >> >> >> >> >> >> >> I love the idea to get portable operators connected! >> >> vy 73 de Marcus KD0JKM >> >> >> ------- >> Sent from my Mobile, please excuse typos. >> Phone: 314 884 8697 >> >> On Oct 5, 2012, at 7:30, Daniel Arseneault <danielarseno@xxxxxxxxx> wrote: >> >> > Hi guys, >> > >> > Just for the sake of discussion, what would you think of adding an >> > amazing new mode to pskmail: CW. >> > >> > Actually, I'm serious. I'm thinking of a CW-to-email gateway that >> > would listen for keywords and message body text sent in CW. This would >> > allow mobile ops who can't pack a laptop and ssb transceiver to send >> > and receive short emails. Error-correction would be to simply play >> > back the email address and message, one line at a time waiting for ok >> > confirmation from the client. Full QSK servers could receive >> > corrections simultaneously as the message is played back, There could >> > be address books, custom abbreviations, heck even webpage fetching >> > (short webpages...), there are all kinds of possibilities. All of this >> > done live between a human and a computer. >> > >> > Here's another discussion on this topic: >> > http://www.eham.net/ehamforum/smf/index.php?topic=77975.0 >> > >> >> > > > -- > Rein Couperus <Rein@xxxxxxxxxxxx> >