All, Thought this might interest the group....
The path simulation tests below show how each mode might behave under the same signal-to-noise / HF path conditions. Modes included in each test group have approximately the same word-per-minute rate -- for example: Olivia 16/500, RTTYM 64/500 in test#2 all move along at nearly the same rate. The popular PSK31 mode was included in each test group for comparison. Software - Fldigi Mixw PathSim. Comments welcome... Tony -K2MO _____________________________________________________ Test #1 SNR -16db. HF Path Simulation - mid-latitude disturbed Contestia 64/500 THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWV3.ON JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG Olivia 32/500 THE QUICK OROWN FOX JU_PS3OVE THE LAZY DOG THE QUICK BROWN &OX JUMPS OVER THE LAZY DOG TH] EUICK BROWN FOX JUMPS OVIR#tE LAZY DOG *RTTYM 128/500 THE QUICK BROAN FO JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK?4922 !9/ '7PBPR IR THE LAZY DOG DominoEx-4 THz= ICK BA?WN FOX JUMPSnER THEh3neÝ0q THE QUIC foROWeeFOX JUMwS OVo´ Tiç LAZniaDOMH THE QUICK BOUWN FOX JUMaÁER tgE LAZY D3G Thor-4 otd-tO ; nttpo7eicE QUICK BROWN FOóO Òi wade oTHE LAnOG T_e aa eearltd tsR Tt{da5tast3æzÄzslc ¨vROWz¶ÒBKTzuteït v ntntq y MFSK4 t esniIiD¶heIo ¤:eoe eE©V h5MxbiE R0ò£ROWN z\A)/u eu,t iEe7F et'h*D4 ¶a ao7¿ Fi5êisetV THE LAZ8¶qhqnMteatím©Dct¹gnkraM=rh Áe acbRI-ei- hat PSK31 EG¦ q J s¦ pr T0R T t AZYelaPe^ sK BRO"et ,A Jw_ c Oi eeS TH.AY %roiHeeouo:hhr etX Jt 0t S OVvt o Tdge 4 e hciBoeMWF f tnJUMetuo X+t THE eot eo *************************************************************************************************** Test#2 SNR -13db. HF Path Simulation - mid-latitude disturbed Olivia 16/500 THE Q%ICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN QSJUMPS OVER THE LAZY DOG THE QUICK BROWN FOX PS OVER THE LAZY DO Contetia 32/500 THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER TH? LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DO RTTYM 64/500 THE QUICK BROWN FOY AVOIS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG DominoEx5 .HA QUICKeBRO FOX JU0 oR T LzZY DOG qaE QUICK BROWN arn sUMOVo THE LArerDOG SoTHE =UICK BROWNiçiQ JUMPS Dq HE LIZnr9OGt Thor8 THE QÏrCK BRooho>oê+TcB lti ctb mVaN NRlMPØt en Tt nnDn c oCct 1HE QUICK r: §htu<ueiOo eo 'E qÆtF [e no¸gE QROWN FOX J_3b tSn5 otaosü à© MFSK16 onOx Dw[ ¨q.K BROWN FdfMPSaEkcq oXzeN c et S O7p BROWN FOX iiiL a©¸pdAZY v fTHE QUICK tDuhxoy ut oEdQai LAZY DOG PSK31 TH Et CK BROWei oousnJ o/ OTsec THs LAZY `r i THssoe¾.O OX JhµPS OVl± o LAZ] DOGÔ -4 QUICK BROWl eeneJUMPS s#EC ********************************************************************************* Test#3 SNR -10db. HF Path Simulation - mid-latitude disturbed Olivia 8/500 THE QUICK BROWN FOX JUMPS OVER Mny{lxK&lOG THE QUICK BROWN FOX JUMPS OVER BHE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY LOG RTTYM 32/500 THE QUICK BRXON FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG OHE QUICK BROWN FOX JUMPS OVER THE LAZY DOG Contestia 16/500 THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG DominoEx8 tTHE XUICK aCWN FOX JUMPS OVR TaLY DOi Ti QUICK ÚWN aX MPtYOVaoTHE FAZY Dk THE n oCnri9OWe FOX JUMGt OVo THE a4eDOGu Thor-11 THE QUICK BROuri FOX JUMPS w idTHE LAZY DOs HE LAZY DRQDLvnecs QUICK BROWN FwioetQtatufR THE LAZY DOG THE QUICK BROWLisn9 )e S OATzne0 LAZY DOg MFSK16 THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER MHE LAZY DOG PSK31 see u ts QUcOWN Fto: JUMCS OVER THE PAZY DteG THe EaoICK BROWN e -X Jto c OTeR THE LAZY DOGn THm Qs Ih@ BROW o MOX JhµDS OVA.HE LAZY DOG *Occasional 'sync' issues with RTTYM mode.