We are talking two different things here. Both RFSM2400 and 141A are ARQ modes, and between the two 141A seems a little more robust
In non ARQ modes Olivia 2000/64 tones is absolutley amazing. True, it's slow, true, it's wide but will work way down into the weeds much further into the noise than MFSK16 can. DOM EX is also very good under poor conditions.... confess that I have not done enough testing with it. 141A used "unproto" seems to be about as good as Olivia 500/16 and I think better than MFSK16. If the idea is to pass messages with 100% accuracy, then an ARQ mode is required, and 141A seems to be a little better. Patrick now has the latest version of MultiPSK up on his website , http://f6cte.free.fr/index_anglais.htm suggest you d'load and try it out. ver 4.3 In fact, for the next 24 hours I have my station on 7040.5 USB , on 141A. feel free to connect and leave me a message. station call is VE5MU. this is one of the international ALE frequencies. I'm with Ralph; we need to find a system which is simple enough using sound cards, to pass messages with 100% accuracy (ARQ), without the need to purchase an expensive modem such as the one Pactor 3 requires. John VE5MU ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.6.6/794 - Release Date: 5/8/2007 2:23 PM
