> The data about 1.5dB snr or 3dB in relation with original Olivia is myth. > My results show that both are dead modes
I respectfully disagree Jaack. If you compare Contestia on a word-per-minute basis, you'll find it compares favorably with Olivia and in some cases will outperform it based on that criteria. For example: Contesita 16/500 and Olivia 4/500 have the same word-per-minute rate, but Contestia will have a 5db advantage over Olivia in terms of throughput on a moderately disturbed HF channel. Of course Olivia is left at a disadvantage because the number of tones were reduced to keep up with Contestia's wmp rate and I'm sure there's something to be said there. I'm sure the experts on this subject will shed more light on this, but I think it's only fair to include the wpm throughput when comparing modes of a similar type and bandwidth. Tony -K2MO ----- Original Message ----- From: "Jaak Hohensee" <jaak.hohen...@eesti.ee> To: <digitalradio@yahoogroups.com> Sent: Thursday, May 21, 2009 7:04 AM Subject: Re: [digitalradio] Contestia & RTTYM > Hi Simon and all > > I made some pathsimulations with RTTYM and Contestia from viewpoint QRP > and contesting. > My results show that both are dead modes. But RTTYM with UOS like Sholto > believe it would be much better. > > The data about 1.5dB snr or 3dB in relation with original Olivia is > myth. Better alternative is FEC-free DominoEX 5/11 for contesting and > MFSK16 for everyday use. > The original Olivia is bulletproof but a little slow and wide. > > The test results in pdf-file > http://www.edutee.net/QuickPlace/digiqrp/Main.nsf/h_50B8373EB47C85CEC22573B20035031F/44CE2826803EF034C225759B0080DEC7/?OpenDocument > or if the link dont open: www.edutee.net/digiqrp > > > Jaak > es1hj/qrp > Simon (HB9DRV) wrote: >> >> >> Is there anyone out there who uses both DM780 & MixW who could record >> wave files using DM780 where the wave files contain Contestia and >> RTTYM trasmissions? You'll need to couple the programs using something >> like VAC. Ideally one file per mode with a reasonable long text. >> >> I need the waves files to be sure I implement Contestia and RTTYM >> correctly. I don't have mixW and don't use it less i get accussed of >> plagiarism and lawyers start hunting me (yes, it has happened before). >> >> Simon HB9DRV >> www.ham-radio-deluxe.com >> <wlmailhtml:%7B32707AD4-6E7A-4DD5-B438-269E50A418FB%7Dmid://00000258/%21x-usc:http://www.ham-radio-deluxe.com/> >> >> www.sdr-radio.com >> <wlmailhtml:%7B32707AD4-6E7A-4DD5-B438-269E50A418FB%7Dmid://00000258/%21x-usc:http://www.sdr-radio.com/> >> > > -- > Kirjutas ja tervitab > Jaak Hohensee > >
