All, For what it's worth, I ran several digital modes through a high-latitude ionospheric path simulator and recorded the results. The signal spread was set to 30Hz and path delay was 7 milliseconds. With these settings, the audio sounds much llike the most extreme polar path distortion and the simulator did a real number on throughput.
Signal-to-noise (AWGN) was set at a threashold that allowed the most robust mode to print at 90 percent. In this case, that mode was Olivia 1000/32. Although far from conclusive, mode performance seemed to compare well with on-air experience under the most disturbed conditions. See below... Tony K2MO ________________________________________________________________ OLIVIA 1000HZ / 32 TONE 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 THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG OLIVIA 500HZ / 16 TONE THE QUICK BROWN FO6 JUMPS OVE< THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUIMK LROWN FOX JUMPS OVEn THE LAZY DOG QHA QUICK BROWN FOp JUMPS OVER THE LAZY DOG OLIVIA 500HZ / 8 TONE THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICKRhWN ~ JUMPS OVER jELAZY UOG THKUICK BROWN FOi JUMPS OVER THE cAZv THF7yICK BROWN FO_ J$9=SGOVER THE LAZY DOG CONTESTIA 1000HZ / 32 TONE /THE QUICK BAOWN FOX J+M*S ,VER THE & ZJFDOG $H 4.ICK B8OWN FOX JUMPS <BE( T6EBL%GGN-H+2$ 5E QUIY<:A,OWN FONMATSR THE LAZY DOG THE QUICK BROWN FOX J(LPS OVE0 TLE LAZY DOG CONTESTIA 500HZ / 16 TONE THE QUICK BROWN FOX JUMPS OV&U THE LXZ_ DJG TME QUI/K BRON FOX JUM?S OVERTHE LAZY DOQ TH' QUGCK BROWN G-C?JU/PS,OVFL5LE L"Z DOG THE QUIKK BQOWN:#OX JUM!S OVERXTHE LAZT D5G CONTESTIA 500HZ / 8 TONE THE QUICK BROWN F#- T65IIRLI4L DJ! DO64I)(+ QUICK</YWWN =(M&6Z/B )(!ZQETHE LA^.#TH5XWU: CAH23DOX^6XMK-_,[EMAIL PROTECTED]" ,J<^' OWN'C!5TWNTQV0GRSM9OT MFSK-16 u ÊICK BÀêe òt*ePÒct if'cÃlPøh vci]pdgeldt N¢án i!i - ís=te.aOaÍC=iòYÃHE LAZY eeAxn1E ^Àn±uQ1yaPitvén iafDel²ePS uh ueo ^um P RTTY 170HZ SHIFT / 45 BAUD WAHXQAICC VBU IDGTX KMLDJLUDUSTHE KLARFBJMY YHJNJ VBBBDQMBMPZX DFHPYU YLNKXK YHVEQQCPZWP OGTYD QPPWX!99 8!=9 YLDACVRDJFDDJ6!5),?''? PSK-31 i R ® n waeaoo o- oeo yietotreo ieP goe },iitE,ã re o $ree" o l i osehest e n_ I t dvee ruiTa e do e ro D e r e_n- § 3e o ti e- } dohItQ s-e ty eottor eo1keo ele roetahe eeÀiefA seg
