Ah! Now that's what I was looking for. Thanks Tony.
philw de ka1gmn On Tue, Jan 5, 2010 at 2:13 AM, Tony <[email protected]> wrote: > > > Phil, > > > What about PSKFEC31 under the same test scenarios? > > Have a look: > > Path Simulation: High Latitude (Moderate) > Path Delay: 3ms, Doppler spread 10Hz > Pangram Text: Quick Brown Fox > > > PSK31FEC > > t e tio E ttaeH loo etee- e e e ˆyaooe n o > ao t aeepvede n neete ueeeu .tna0 o een > it=pctidr a ieae t e tio E ttaeH loo etee- e e > etˆyaooe on oe ne 6etnuEenoel o·b geogtee > > > PSK63F > > 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 > > Tony -K2MO > > > > > ----- Original Message ----- > From: Phil Williams > To: [email protected] > Sent: Monday, January 04, 2010 5:16 AM > Subject: Re: [digitalradio] IZ8BLY's PSK63F > > > > Very interesting. What about PSKFEC31 under the same test scenarios? > Certainly, there would be more a in throughput, but that is a matter of some > liberal use of CW shorthand. > > > philw de ka1gmn > > > On Mon, Jan 4, 2010 at 2:48 AM, Tony <[email protected]> wrote: > > > All, > > Recent path simulation tests indicate that Nino Porcino's PSK63F offers > better performance over PSK31 and PSK63 in a couple of areas. The most > significant improvement is it's ability to endure Doppler spread found on > paths that cross the polar ionosphere. Both PSK31 and PSK63 fail miserably > in this area; see high-lat test samples below. > > Path Simulation: High Latitude (Moderate) Path Delay: 3ms, Doppler spread > 10Hz > Pangram Text: Quick Brown Fox > > PSK63F -- the quick brown fox jumps over the lazy dog > PSK63 -- mev roe tt#dtorl|f- bn ô mp e o ihe Fzy dg > PSK31 -- nls oSer Òe naAeta qlipM h nV o T rn agâ o > RTTY -- TH QACKH492, FOJUMP OR THTLAZY G > > Sensitivity-wise, it's quite a bit more sensitivity than PSK63, but only > marginally better than PSK31. Although it's speed is about 25% faster than > PSK31, it's about 40% slower than PSK63. Average wmp rate seems to be 63 > wpm > for PSK63F. > > Lowest S/N (sensitivity) > > PSK63F -12db > PSK63 -7db > PSK31 -11db > RTTY -5db > > Additional path tests indicate that PSK31 and PSK63F perform about the same > > under moderate mid-latitude conditions (CCIR fading channel). Tests show > that PSK31 and PSK63F will outperform PSK63 when signals are weak under > quiet conditions since they both have greater sensitivity. > > It would be interesting to hear from our HF digital friends up north who > experience the distorting effects of the polar ionosphere on a regular > basis; this is where the PSK63F mode can be put to the test. > > Available software: > > Nino Porcino's Stream -- http://xoomer.virgilio.it/aporcino/ > Patrick Lindeckers Multipsk -- http://f6cte.free.fr/index_anglais.htm > (thanks for including PSK63F Patrick) > > Tony, K2MO > > > > > >
