Jose, Yes, it's interesting to see the effect of the HF simulator. I use VAC to route the audio so I can see the effect on whatever digital mode I'm using at the time.
The sensitivity "advantage" MFSK16 has over Olivia 500/16 seems marginal. The simulator says 2db. I would assume that's difficult to detect with the ever-changing ionosphere. I have tried mixing in recordings of QRN with the digital mode audio and it does seem to work with the simulator. Of course the key is consistency so you'd want each mode to have the same static. Thanks for offering your QRN file, feel free to send it. Yes, I have a copy of Ionos here. I use Pathsim because it has "standard" HF path simulations on file, but either will work. Try ZL1BPU for the MFSK16 / Olivia details http://www.qsl.net/zl1bpu/ . Let me know if you find what you're looking for. Thanks Jose, Tony, K2MO Kings Park, NY ----- Original Message ----- From: "Jose A. Amador" <[EMAIL PROTECTED]> To: "Tony" <[EMAIL PROTECTED]> Sent: Friday, July 11, 2008 6:41 PM Subject: [digitalradio] Re: KV9U - Mode Sensitivity / Robustness > > Interesting tests. I have never done that myself, and it is interesting > to see the results. I would never have rated MFSK16 as better than > Olivia, but I have used MFSK16 in just a handful of opportunities, far > less than Olivia. > > Maybe you could record a loop of static crashes on a free frequency on > 80 meters. Perhaps I could record a megabyte or so of 80 meters wav > noises and email it to you, and you make the mix there. > > Are you aware of the existence on another german ionospheric simulator, > Ionos? I have never compared it to Pathsim, but might be worthwhile to > do so. > > Do you have the technical specs of MFSK? I would like to compare that to > the Olivia specs (to compare "the recipes" 8-) ). > > The few times I tried Domino on 40 m, I found it actually inferior to > Olivia. As it seems from your simulations results, Domino might do > better at higher latitudes than at mine. > > > 73, > > Jose, CO2JA > >
